a large bird drops a coconut as it flies horizontally at a constant speed. when the coconut hits the beach below, where will the bird be in relation to the coconut?

Answers

Answer 1

Since the bird is traveling at a constant horizontal velocity, the coconut hits the beach below, the bird will be in a position that is directly above the coconut in relation to the coconut.

What is the free fall of an object?

The free fall of an object refers to the motion of an object that is released from a certain height above the ground and allowed to fall freely under acceleration by the force of gravity alone.

Objects that are experiencing free fall, are accelerated by a constant value that is equal to the value of acceleration due to gravity.

Examples of objects experiencing free fall include:

a coconut fruit that falls off the treea mango fruit that drops off the treea person that jumps off the roof of a tall building

For the coconut dropped by a bird flying at a constant horizontal velocity, the initial horizontal velocity of the coconut is the velocity of the bird in the horizontal direction.

When the bird drops the object, the object will fall with a vertical velocity that is accelerated by g. The object will fall at a distance equal to the horizontal distance traveled by the bird.

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Related Questions

you are helping a friend study the eight planets in order from the sun outward. they also need to know if they are terrestrial or jovian. how can you help them memorize these specifics?

Answers

They are terrestrial or Jovian and can have specifics of energy level.

Jovian Planets:-

The gas giants, also known as Jovian planets, are planets devoid of any solid material. Technically speaking, Jovian planets are those that are 10 times as massive as the Earth. Jupiter, Saturn, Uranus, and Neptune are examples of such planets in our solar system. These planets bear a striking resemblance to Jupiter, the largest planet in the solar system, which is why they are known as the Jovian planets.

Terrestrial Planets:-

Terrestrial planets, also referred to as rocky planets are those planetary bodies that are primarily made of silicate rocks. These bodies include Mercury, the smallest terrestrial planet, Venus, Earth, and Mars. These planets are referred to as "Earth-like" or "terrestrial" (derived from the Latin word for the Earth, terra) because they resemble the Earth to a significant extent. The four terrestrial planets in our solar system are not the only planets with terrestrial characteristics; scientists have found several other planets in the universe.They are telluric planets.

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Jane is observing the milky way thanks to the fact that it is a very clear, dark night. However, she feels like she can only see a very small part of it and wants to see the entire galaxy. Why is this impossible?.

Answers

Due to her location within it, this is not possible. It can only be seen if the sky is clear and there is little to no light pollution, and as a result, environmental changes occur.

What is meant by Milky way ?

The Milky Way is crammed with anything between 100 billion and 400 billion more stars, many of which have their own planets. The Milky Way is so named because it appears from Earth like a streak of milk that has been spilled across the sky.

A galaxy is a sizable group of stars gathered in one place in the universe. The Milky Way galaxy, which contains the sun, Earth, and seven other planets, is where our solar system is located. Similar to our sun, the Milky Way is home to hundreds of billions of stars.

The Milky Way makes it possible to examine a medium-sized spiral galaxy's functioning in great detail.

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what is the maximum speed of a 330 kg car if the spring is compressed the full amount? express your answer with the appropriate units.

Answers

Speed can be calculated using Kinetic energy and Potential energy. Kinetic energy is directly proportional to the mass of the object and to the square of its velocity: K.E. = 1/2 m v2.

How to calculate speed using Kinetic energy and Potential energy?

We know

Mass of the car = 300kg

G=9.8

Height = 16m

Thus, potential energy U =mgh and kinetic energy is 1/2mv²

0.5*m*v2 = m*g*h

v = √(2*g*h) = √(2*9.81*16)

v=17.71 m/s

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n the preceding question, you have calculated the frequency of a molecular vibration. the molecule can absorb light at this frequency. the light happens to be in the infrared (ir) part of the spectrum. it is common to quantify the energy of ir photons using inverse centimeters instead of inverse seconds. to do so, one divides the frequency by the speed of light expressed in cm/sec. what is the energy of the infrared photon corresponding to the frequency from the preceding problem, in cm-1?

Answers

The Energy of the Infrared photon is  45.678* [tex]10^{-21}[/tex] J

The parameters are :

Frequency (f) = [tex]6.9 * 10^{13}[/tex] Hz

Energy is given by E = hf

where h is the Planck's constant = h = 6.62* [tex]10^{26}[/tex]

Putting these values in the formula for energy,

We evaluate the energy of the infrared photon as,

E = hf

E = [tex]6.62 *10^{-34} * 6.9 *10^{13}[/tex] = 45.678* [tex]10^{-21}[/tex]

IR emissions from materials are measured using infrared spectroscopy at certain wavelengths. As photons (light particles) are absorbed or released by electrons in molecules as the electrons pass between orbits, or energy levels, the IR spectrum of a material will exhibit distinctive dips and peaks.

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a guitar string that is attached at both ends is 40 cm long and produces a fundamental note of frequency 200 hz when it is plucked. what are the frequencies of the first and second overtones of this string?

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The first and second overtones are 400hz and 600hz respectively

What is overtone In a stretched string?

When a string vibrates in section, it produces overtones. The lowest frequency produced from a plucked string when the string vibrates in one loop is called fundamental frequency. But when it vibrates in multiple loops it is called overtone. Overtones are also called Harmonics of the fundamental frequency.

The first , second and third overtones in a string is 2fo , 3fo and 4fo , where fo is the fundamental frequency.

Therefore if the fundamental frequency is 200hz, the first overtone is 2×200 = 400hz and the second overtone is 3×200 = 600hz.

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(a) at what angle is the first minimum for 550-nm light falling on a single slit of width 1.00μm1.00μm ? (b) will there be a second minimum?

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The required angled is[tex]$\theta=33.4^{\circ}$[/tex].

What is angle is the first minimum?

The first minimum is going to be theta one is the inverse sine of one times 550 times ten to the minus nine meters divided by one times ten to the minus six meters giving an angle of 33.4 degrees

[tex]\begin{aligned}& \lambda=550 \mathrm{~nm} \\& D=1.00 \mathrm{~nm}\end{aligned}[/tex]

[tex]D \sin \theta=m \lambda, m=1,-1,2,-2, \ldots$$[/tex]

a) [tex]$\theta=\sin ^{-1}\left(\frac{m \lambda}{D}\right)$[/tex]

[tex]\theta_1=\sin ^{-1}\left(\frac{(1)\left(550 \times 10^{-9} \mathrm{~m}\right)}{1.00 \times 10^{-6} \mathrm{~m}}\right)=33.4^{\circ}[/tex]

b)The value of sine function can never be greater than 1, so second minimum does not exists for given wavelength of light and width of slit.

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calculate the moment of inertia of a thin, uniform rod of length l and mass m that rotates about a pivot at distance l/3 from one end.

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Mass moment of inertia is a quantity that measures the degree of inertia of a body for rotational motion = ML²/9

A rigid body's moment of inertia, also referred to as its mass moment of inertia, angular mass, second moment of mass, or, more precisely, rotational inertia, is a property that establishes the torque required to achieve a desired angular acceleration about a rotational axis, much like mass establishes the force required to achieve a desired acceleration.

Depending on the axis selected and the distribution of the body's mass, a change in the body's rate of rotation will need a greater torque for bigger moments.

The moment of inertia for a point mass is just the mass times the square of the distance perpendicular to the axis of rotation. This is an extensive (additive) property.

Find the attachment of answer

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Two sources of sound, Sį and S2, emit sound waves in phase at a frequency of 1000 Hz. They are separated by a distance d 2.0 m. If you were to move a detector along the x-axis starting at S1, how far would it have to be moved before it detects no sound at all? Take the speed of sound to be 343 m/s.

Answers

If we were to move a detector along the x-axis starting at S1, it would have to be moved 11.6m far before it detects no sound at all.

A sound wave is what?

A sound wave is a pressure wave, which may be conceptualized as variations in pressure over time. Transverse waves include sound waves. The tines of a tuning fork must transfer air from the fork to one's ear in order for one to hear the sound of the fork. The majority of sound waves, although not all of them, are produced by some sort of vibrating object.

What two forms of sound waves are there?

The characteristics of sound waves should be the starting point for studying sound. Transverse and longitudinal waves are the two fundamental forms of waves, and they are distinguished by how they move through space.

Given,

The two sources, [tex]S_{1}[/tex] and [tex]S_{2}[/tex] separated by a distance is d = 2.0m

[tex]S_{2}P = \sqrt{x^{2} +2.0^{2} }[/tex]

       = [tex]\sqrt{x^{2} +4}[/tex]

For destructive interference

[tex]S_{2}P - S_{1}P[/tex] = λ/2                                                    

 λ=ν/f

Given:

frequency  f = 1000hz

speed of sound ν = 343m/s

   =[tex]\frac{343}{1000} = 0.343m[/tex]

[tex]\sqrt{x^{2} +4} -x[/tex] = [tex]\frac{0.343}{2}[/tex] = 0.1715

⇒ [tex]\sqrt{x^{2} +4}[/tex] = 0.1715 + x

⇒ [tex]x^{2}[/tex]+4 = [tex](0.1715+x)^{2}[/tex]

           =      [tex](0.1715)^{2} + x^{2} + 2(0.1715)(x)[/tex]

⇒ 4 = [tex](0.1715)^{2}[/tex]+ 0.343 [tex]x[/tex]

⇒ [tex]x = \frac{4-0.1715^{2} }{0.343}[/tex]

       = 11.6m

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calculate the work w done by the gas during process 1→2→6→5→1 . express your answer in terms of p0 and v0 .

Answers

4P₀V₀ is the work done by the gas during process 1→2→6→5→1.

Is the gas used for or used in work?

Therefore, the work performed by a gas expanding against an external pressure is negative, analogous to the work performed by a system on its surroundings. In contrast, when a gas is compressed externally, V₀ and the work is positive because the environment exerts force on the system.

The gas must release some energy into the environment when it expands in response to an external pressure. The overall energy of the gas is thus reduced as a result of the negative work. When a gas is compressed, energy is transferred to it, increasing its energy as a result of positive work.

Let's consider,

Work done = -W (As the energy is released)

External pressure = P₀

Volume of gas = V₀

So, the work done can be calculated as follows:

W = P x (dV)

-W = P₀ × V₀

Now according to the process given:

1→2→6→5→1

Energy flow increases up to 6 eventually decreases with loss of factor 4.

Hence, the energy of the system (work done) is:

-W = 4 × P₀ × V₀

-W = 4P₀V₀

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in Section 24-2. you learned how Neptune is afferent from Uranus, and how its rings and moons fomed and evolved Based on what you leamed about Uranus select all of the correct statements from the following list Neptune is similar to Uranus as far as sze, mass, composition and interior structure Lke Uranus, Neptune shows very little atmospheric activity Neptune's largestmoon Triton, has a retrograde orbit which suggests that it was captured i Beng much farther from the sun. Nepture has less internal heat than Uranus Triton has a tin atmosphere and may be geologically active Lke Uranus. Neptune's solid core prevented from having a magnetic field Neptune's position was predicted before it was discovered

Answers

Neptune and Uranus are similar in terms of size, mass, composition, and internal structure. The largest moon of Neptune, Triton, appears to have been captured because of its retrograde orbit.

Triton has a thin atmosphere and could be experiencing geological activity. Neptune's location was anticipated before it was ever discovered. Neptune is one of just two ice giants in the outer solar system (the other is Uranus). The planet's bulk, which is composed of a hot, dense fluid floating atop a tiny, rocky core, is primarily made up of water, methane, and ammonia (80% or more). Uranus is Neptune's identical twin. Their mass and chemical contents are equivalent. They are composed of an exterior layer of rocks and a mantle that is a mixture of water, ammonia, and methane ices. A physical body's mass is its total amount of matter. Inertia, or the body's resistance to acceleration (change of velocity) when a net force is applied, is also measured by this property. The gravitational pull an object has on other bodies is also influenced by its mass. The kilograms is the fundamental mass unit of SI (kg).

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A wave has a frequency of 46hz and a wavelength of 1. 7 meters. What is the speed of this wave?.

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The speed of a wave with a frequency at 46 Hz as well as a wavelength = 1.7 meters is 78.2 m/sec.

What is the name of wavelength?

The Greek letter λ is frequently used to represent wavelength. The name wavelength is also occasionally used to refer to modulated waves, their sinusoidal envelopes, or waves created by the interference of multiple sinusoids.

What is the purpose of wavelength?

The distance between each trough or the difference between each wave's crest and the next one. One of "yardsticks" used to gauge radiation levels is this. The SI unit measuring wavelength is the metre, which is frequently abbreviated as m. The wavelength of an object is measured using its multiples and fractions.

Briefing:

Wavelength = 1.7 m

Frequency = 46 Hz

v denotes the wave's speed, w its wavelength, and f its frequency.

f = v/w,

= 46 =v/1.7

v = 78.2 m/sec

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a binary star system has two stars where the low mass star orbits the more massive star at a distance of 3 au. they orbit each other with a period of 2 years. their combined mass in solar units is

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Their combined mass in solar units is 9.813.

Distance is the numerical often qualitative size of how some distance aside items or factors are. In physics or regular usage, the distance may check with a physical duration or an estimation primarily based on other criteria.

The space between two factors in physical space is the period of an immediate line among them, that's the shortest feasible course.

It reduces the entire international or part of the arena to a small sheet of paper. At the same time as making a map, cartographers pay attention to properly constitute the distance between two locations.

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a circuit is constructed with four resistors, one capacitor, one battery and a switch as shown. the values for the resistors are: r1

Answers

The current flowing through the resistors is 0.229 A

What is a resistor ?

A resistor is an electrical component that controls or restricts how much electrical current can pass across a circuit in an electronic device.

A specified voltage can be supplied via resistors to an active device like a transistor.

An electrical component with two terminals that provides electrical resistance is called a resistor.

Resistors are frequently used in electronic circuits to reduce current flow, divide voltages, block transmission signals, and bias active elements.

Given; The value of the resistors are :

R1 = 41 ohm

R2 = 41 ohm

R3 = 71 ohm

R4 = 64 ohm

V = 24 V

At t = 0 sec when there is no flow of current through resistors R2 and R3

therefore the equivalent resistance is = R1 + R4

Thus V = I * R

24/ 41 + 64 = I

I = 0.229 A

thus the current flowing through the resistors is 0.229 A

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To make the pattern bigger and easier to see, should you move the slide closer tothe screen or closer to the laser? Explain. Be sure to comment on what variableschange (e.g. wavelength, angles to the minima, distance to the screen, position ofthe minima, etc.)

Answers

So moving the slit towards the laser will increase the slit and screen distance and the screen and the fringe will be bigger. The other factors such as the angle of diffraction, and wavelength will remain unaltered in this case.

What is Diffraction?

In order to enter the region of the geometric shadow cast by the obstruction or aperture, waves must interact with one another or bend around its edges, which is referred to as diffraction. A secondary source of the wave that is propagating is in fact created by the diffracting item or aperture.

What is Fringe?

The band of alternating light and dark material called a fringe is produced via interference.

The formula is used to calculate the fringe width

β=λDd

Where β represents the bandwidth, λ represents the wavelength of the light, D represents the distance between the source and the screen, d represents the distance between the two slits

Hence, moving the slit towards the laser will increase the slit and screen distance and the screen and the fringe will be bigger. The other factors such as the angle of diffraction, and wavelength will remain unaltered in this case.

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Determine which the following are defined Whenever they occur denctes multivariable function and denotes vector field both of which are twice continuously differentiable on common domain_ (Select all that apply.) V . (F . Vf) V. (V x Vf) V x (V . F) V x (V x f) V x (V x F) V . (V x F)

Answers

Yes, all of the above are defined whenever they occur and denote multivariable functions and vector fields which are twice continuously differentiable on a common domain.

What is vector field?
A vector field is the assignment of the a vector to each point inside a subset of space in the fields of vector calculus and physics. For example, a vector field inside the plane could be visualised as a group of arrows, each attached to the a point in the plane and each with a specific magnitude and direction. Vector fields are frequently used to simulate various physical phenomena, such as the strength and motion of a force as it shifts through one point to the next or the speed and trajectory of a fluid moving through space.

The first expression, V . (F . Vf), denotes a multivariable function which is the dot product of a vector V and the composition of a function F with a vector field Vf.

The second expression, V . (V x Vf), denotes a multivariable function which is the dot product of a vector V and the cross product of a vector V and a vector field Vf.

The third expression, V x (V . F), denotes a vector field which is the cross product of a vector V and the dot product of a vector V and a function F.

The fourth expression, V x (V x f), denotes a vector field which is the cross product of a vector V and the cross product of a vector V and a function f.

The fifth expression, V x (V x F), denotes a vector field which is the cross product of a vector V and the cross product of a vector V and a function F.

The sixth expression, V . (V x F), denotes a multivariable function which is the dot product of a vector V and the cross product of a vector V and a function F.

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element c above has a strong emission line around 450 nm. does this emission line represent a lower energy or higher energy transition than the emission line at 627 nm? explain your answer. (2 points)

Answers

According to the given photon energy formula and with the two emission lines mentioned, it can be concluded that the emission line at 627 nm represents a lower transition energy than the emission line at 450 nm.

It is given to us that -

Element C has a strong emission line around 450 nm.

There is also another emission line at 627 nm.

We have to find out the emission line that has a lower energy or higher energy transition.

We know that Transition energy is the energy required for electrons in the sample to move from one quantum state to another.

Emission spectra measure energy in the form of light emitted when energy is added to a molecule to excite it, support this electronic transition, and move from the excited quantum state to the ground state or the basic state that they were in initially.

This transition energy depends on the wavelength of the emitted radiation which can be represented as a photon energy formula such as -

E = h c / λ

Therefore, from the given photon energy formula and with the two emission lines mentioned, it can be concluded that the emission line at 627 nm represents a lower transition energy than the emission line at 450 nm.

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2.
A book weighs 6 newtons.
A librarian picks up the book from one shelf and puts it on a shelf 2 metres higher.

(a) Calculate the work done on the book. [Show your working].

(b) The next person to take the book from the shelf accidentally drops it.
The book accelerates at 9.8m/s².
Use this information to calculate the mass of the book. [Show your working].

Answers

Answer:

0.612 kilograms.

Explanation:

To solve this problem, we need to use the definition of work as the product of force and displacement.

(a) The work done on the book is the force applied to it multiplied by the distance through which it is moved. In this case, the force applied to the book is its weight, which is 6 newtons. The displacement of the book is 2 meters, because it is moved from one shelf to another shelf that is 2 meters higher. Therefore, the work done on the book is 6 newtons * 2 meters = 12 joules.

(b) The next person to take the book from the shelf accidentally drops it. When an object is dropped, it accelerates due to the force of gravity, which is 9.8 m/s². Since the force of gravity is the same for all objects, we can use the acceleration of the book to calculate its mass. Specifically, we can use the formula F = ma, where F is the force acting on the object (in this case, the force of gravity), m is the mass of the object, and a is its acceleration.

In this case, the force acting on the book is its weight, which is 6 newtons. The acceleration of the book is 9.8 m/s². Therefore, we can solve for the mass of the book using the formula F = ma: 6 newtons = m * 9.8 m/s². This simplifies to m = 6 newtons / 9.8 m/s² = 0.612 kilograms.

In summary, the work done on the book when it is picked up and moved to a higher shelf is 12 joules, and the mass of the book is 0.612 kilograms.

a 4 kg ball is attached to a 1.5 m long string and whirled in a horizontal circle at a constant speed 5 m/s. how much work is done on the ball during one period? quizziz

Answers

The work done on the ball during one period is 66.67 J.

What is acceleration?
The rate at which the speed and direction of a moving object change over time. A point or object moving straight ahead is accelerated when it accelerates or decelerates. Even though the speed is constant, motion on a circle accelerates because the direction is constantly shifting. Both effects contribute to a acceleration for all other motions. Acceleration is a vector quantity because it has both a greater acceleration. A vector quantity is also velocity. The velocity vector change over a time interval divided by time interval is the definition of acceleration.

The amount of work done on the ball during one period is equal to the force times the distance traveled, which is equal to the mass times the centripetal acceleration times the distance traveled. Thus, the work done on the ball during one period is equal to 4 kg x (5 m/s)2 / 1.5 m = 66.67 J.

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A wooden loop and a wire loop, both with the same shape and size, are placed next to the north poles of identical magnets. Then, the loops are moved closer to and farther from the magnets in exactly the same way. The emf generated around the wooden loop is zero. O less than the emf generated around the wire loop. equal to the emf generated around the wire loop. O greater than the emf generated around the wire loop.

Answers

If the loops are moved closer to and farther from the magnets in exactly the same way then the emf generated around the wooden loop is equal to the emf generated around the wire loop.

Electromotive force (emf) can be described as the electric potential that is produced by either changing the magnetic field or is produced by an electrochemical cell.

The emf generated around the wooden loop is equal to the emf generated around the wire loop because Faraday's law is only concerned about how the flux is changing and is therefore independent of the material involved. The loop material is not involved in the magnetic flux expression, so an emf is generated anyhow as long as it experiences a change in magnetic flux since it moves near the end of the bar magnet, changing the magnetic flux through the loop.

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explain how the following rules check if there is a has color in a map factbase. adjacent(x, y) :- edge(x, y); edge(y, x). has color(s1, s2, color1) :- adjacent(s1, s2), color(s1, color1),color(s2, color1).

Answers

Prolog runtime will iteratively apply the rules to all the facts to find the matches and mismatches.

In physics, color is specifically associated with the particular range of wavelengths of electromagnetic radiation visible to the human eye. Such wavelengths of radiation make up a portion of the electromagnetic spectrum known as the visible spectrum. H. Light.

So colors have a physical basis. However, our perception of it is complicated by how the human visual system works. Some people have mutations that alter their ability to process incoming light and distort their perception of color.

Opticks is one of the great works of scientific history, documenting Newton's discoveries in his experiments with light passing through a prism. He identified the colors of his ROYGBIV (red, orange, yellow, green, blue, indigo, and violet) that make up the visible spectrum.

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A model for circuits Part 1: Current and resistance C. Light a bulb using a battery and a single wire. Observe and record the behavior (ie., brightness) of the bulb when objects made out of various materials are inserted into the circuit. (Try materials such as paper, coins, pencil lead, eraser. your finger, etc.) What is similar about most of the objects that let the bulb light?

Answers

Similarity which leads about most of the object to let the bulb light is their conducting materials.

The behaviour (ie., brightness) of the bulb when objects made out of various materials are inserted into the circuit is as-

The bulb glows when connected to conducting object but it does not glow when some objects like eraser, wood, plastic etc. are used to complete the circuit as it is the non-conducting objects.

Paper is a non-conducting object.

Coins are normally made up of silver, gold and metal alloys and we know all metals conduct electricity.

Pencil lead is made up of graphite which is non-metal still it conducts electricity as graphite contains delocalised electron (free electrons). These electrons can move through the graphite, carrying charge from place to place and allowing graphite to conduct electricity.

Human fingers are conductors as whole body of a human is an excellent conductor of electricity. This reply on the fact that our fingers is 3 parts salty water - which means it's got lots of loose electric charges floating around in it.

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a beam of white light goes from air into water at an incident angle of 75o. at what angles are the red (660 nm) and violet (410 nm) parts of the light refracted?

Answers

Consequently, the refraction angles for red and violet light are 46.5° and 46.0°, respectively.

What is the index for refraction?

The difference between the speed of light in a vacuum and that in a medium, denoted by the letters c and c', is known as the index of refraction (n): The propagation vector in the new medium has a different angle with respect to the normal when light travels from one medium to another at an angle as a result of this speed difference. In optics, an optical media's refractive index—a dimensionless number that indicates how well the medium bends light—is used to measure that medium's optical properties. When light enters a substance, its refractive index influences how much of its path is bent.

Why do we use refractive index?

A material's refractive index, which is quantified, indicates how much a light path is bent or refracted when it penetrates that material. The critical angle for total internal reflection and the amount of light that is reflected when it reaches the contact are both determined by the index of refraction.

Briefing:

For light of a specific color and a specific set of media, the sine of the angle of incidence to the sine of the angle of refraction ratio is constant.

According to Snell's law.

The formula for Snell's law is

n=sini/sinr

I stands for incidence angle.

The refraction angle is r.

The medium's refractive index is n.

For red light,

n=sini/sinr

1.331=〖sin75〗^°/sinr

sinr=〖sin75〗^°/1.331

r=〖sin〗^(-1) (0.7258)

r=46.5°

Consequently, the red light refraction angle is 46.5°.

For violet light,

n=sini/sinr

1.342=〖sin75〗^°/sinr

sinr=〖sin75〗^°/1.342

r=〖sin〗^(-1) (0.7197)

r=46.0°

Consequently, the violet light's angle of refraction is 46.0°.

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Complete question is:

a beam of white light goes from air into water at an incident angle of 75o. at what angles are the red (660 nm) and violet (410 nm) parts of the light refracted? Red light in water has an index of refraction equal to 1.331 and that of violet light is 1.342.

The cable lifting an elevator is wrapped around a 1.2-m-diameter cylinder that is turned by the elevator's motor. The elevator is moving upward at a speed of 2.5m/s . It then slows to a stop, while the cylinder turns one complete revolution.
How long does it take for the elevator to stop?
Express your answer to two significant figures and include the appropriate units.

Answers

It will take 2.8 s  for the elevator to stop when it is moving with a speed of 2.5m/s

1)The cable will travel a linear distance equal to the distance covered by the elevator because it is constantly taut and neither slipping nor stretching.

2) Since the cylinder makes one full rotation, the cable's length is equal to the cylinder's circumference.

3) As a result, you must determine the cylinder's circumference, which is determined using the formula C = 2[tex]\pi[/tex] radius.

The radius is half the diameter: 1.2 m / 2 = 0.6 m

Hence, C = 2π × 0.6m = 3.8m

⇒ Distance run by the elevator = 3.8m

4) Now, assuming that the elevator decelerated uniformly from its starting speed of 2.7 m/s to a complete halt (Vf = 0), you use the related formulas:

i) [tex](V_{f})^{2}[/tex]= [tex](V_{o})^{2}[/tex] - 2ad ⇒ 2ad = [tex](V_{o})^{2}[/tex]- [tex](V_{f})^{2}[/tex] ⇒ a = [tex](V_{0})^{2}-(V_{f})^{2}[/tex]/ (2d)

a = [2.7 m/s]² / (2×3.8m) = 0.96 m/s²

ii) [tex]V_{f}[/tex] =  [tex]V_{0}[/tex]- at ⇒ t = [2.7 m/s] / (0.96 m/s²) = 2.8 s

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the sun appears to move across the sky, because the earth spins on its axis. to a person standing on the earth, the sun subtends an angle of sun 9.28 103 rad (see conceptual example 2). how much time (in seconds) does it take for the sun to move a distance equal to its own diameter?

Answers

During the day, the Sun appears to move across the sky from Earth and disappears at night. As a result of the Earth's eastward rotation, this has occurred.

Why does the Sun appears to move across the sky because?Our nearest star to us is the Sun. Both light and heat are produced by the Sun. Furthermore, it emits harmful ultraviolet light that can lead to cancer and sunburn. Without the Sun, our planet would be completely dark and frozen, devoid of oceans of liquid water and life. There would also be no daylight.1.4 million kilometers across, or 109 Earths lined up side by side, is the size of this enormous ball of extremely hot gas. It weighs the equivalent of 330 000 Earths at 2 million trillion trillion trillion kilograms. The Sun could accommodate about 1 300 000 Earths!From Earth, the Sun appears to move across the sky during the day and vanish during the night. The reason for this is that the Earth is rotating eastward. The North and South poles serve as the Earth's North and South axes, around which the planet revolves. As a result, the Sun appears to rise in the east in the morning and rise steadily in the sky until it reaches its midday position to us here on the rotating Earth. Later in the afternoon, the Sun appears to descend further into the sky before setting in the west.The Sun is approximately 150 million kilometers away, despite appearing small when seen at sunrise or sunset.Even though sunlight is moving at a speed of about 300 000 km/s, it takes about 8 minutes to reach us from this distance. The Sun sets eight minutes after the actual event, according to this.

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he amplitude of a lightly damped harmonic oscillator decreases by 3.0% during each cycle.show answer no attempt what percentage of the mechanical energy of the oscillator is lost in each cycle?

Answers

The percentage of mechanical energy of the oscillator lost in each cycle is 5.91%.

The difference between mean or equilibrium position and either extreme is the oscillation's amplitude. The particle oscillates completely back and forth from its mean position.

The mechanical energy is the sum of both elastic potential energy and kinetic energy.

The mechanical energy of any oscillator is given by the formula,

E = 1/2 K*A²

When amplitude A decreases by 3%, then

(E₂ - E₁)/ E₁ = [1/2 K( A₂²/A₁²)]/(1/2 K*A₁²)

⇒ [(A₂²- A₁²)/(A₁²)]

⇒ (97² - 100²)/100²

⇒ 5.91% of the mechanical energy is lost in each cycle

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Once you set a ball rolling in a frictionless bowling alley, the force needed to keep it rolling is.

Answers

No alternative is appropriate once you start a ball moving in such a frictionless bowling alley; the force required to keep it rolling is.

A bowling lane has how much friction?

The friction variance along the length of modern bowling alleys is modulated by an oil coating. The coefficient of friction is typically 0.04 in oiled regions and 0.2 in unoiled portions.

What does friction have to do with bowling?

A bowling ball goes more quickly the lower its coefficient of friction. The slower a ball moves down the path, the more friction it has. The form, weight, and surface texture of the ball are only a few of the variables that determine friction. When your ball makes contact with the lane, all of these elements affect friction.

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A high-speed bullet train accelerates and decelerates at the rate of 10 ft/s2. Its maximum cruising speed is 90 mi/h. (a) What is the maximum distance the train can travel if it accelerates from rest until it reaches its cruising speed and then runs at that speed for 15 minutes?
(b) Suppose that the train starts from rest and must come to a complete stop in 15 minutes. What is the maximum distance it can travel under these conditions?
(c) Find the minimum time that the train takes to travel between two consecutive stations that are 45 miles apart.
(d) The trip from one station to the next takes at minimum 37.5 minutes. How far apart are the stations?

Answers

Its top cruising speed is 90 miles per hour. (a) I discovered that the answer to the question, "What is the maximum distance the train can travel if it accelerates from rest till it reaches," was 22.665.

Given is the formula Acceleration=Deceleration=a

Maximum cruising speed: 1 mile = 5280 feet per hour (3600 s).

Time, t = 15 min = 1 min = 60 s

initial velocity, u=0

Replace the values

Distance=D

Distance total = s+d=2178+118800=120978 feet

Total distance = 22.665 miles, which is the furthest train can go.

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which energies change as the bobsled moves down the slope and hits the spring? select all that apply.

Answers

In our bobsleds, the bobsled's potential energy on the ramp was converted into kinetic energy as it descended the ramp, and then thermal energy as friction as it came to a stop.

What does science mean by a potential energy?

The term "potential energy" describes the energy that is held within an object due to the object's position, state, and arrangement. It is one of the two essential types of energy; the other is energy. The object's position, status, or configuration changes, releasing the stored energy.

Describe a potential energy example.

Due to its position, an object might accumulate energy. If a demolition machine's heavy ball is held in an elevated position, for instance, it can store energy. Potential energy is the name for this kinetic energy that is held in a position. As a result of its location, a drawn bow can also store energy.

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a 873-kg (1930-lb) dragster, starting from rest completes a 403.1-m (0.2519-mile) run in 4.935 s. if the car had a constant acceleration, what would be its acceleration and final velocity? m/s2

Answers

The acceleration of the dragster is 33.1 m/s².

The final velocity of the dragster is 163.4 m/s.

What is the acceleration of the dragster?

The acceleration of the dragster is calculated by applying the following kinematic equation.

s = ut + ¹/₂at²

where;

u is the initial velocity of the dragstera is the accelerations is the distance traveledt is the time of motion

s = 0 + ¹/₂at²

a = ( 2s ) / t²

a = (2 x 403.1) / (4.935²)

a = 33.1 ms/²

The final velocity of the dragster is calculated as follows;

v² = u² + 2as

v² = 0 + 2(33.1)(403.1)

v² = 26,685.22

v = √ (26,685.22)

v = 163.4 m/s

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a baseball is hit with a horizontal speed of 16 m/s and a vertical speed of 18 m/s upward. what are these speeds 4 s later?

Answers

These speeds 4 s later is -20 m/s.

What is Acceleration due to Gravity?

The acceleration due to gravity would affect the radial component of an object at the surface of the earth. This would seem to us that the gravitational force acting on us on a vertical axis. This means that gravity would not affect any horizontal movement.

Determine the horizontal and vertical speeds, [tex]$v_x$[/tex] and [tex]$v_y$[/tex], of the baseball after t=4 seconds. We only recognize gravity as the force acting on the object, acting only on the vertical component. This means that the horizontal speed remains the same, such that

[tex]$$v_x=16 \mathrm{~m} / \mathrm{s}$$[/tex]

Now, we determine the vertical speed after the given time, t, by applying the kinematic equation,

[tex]$$v_y=v_{0 y}-g t$$[/tex]

where[tex]$g=9.81 \mathrm{~m} / \mathrm{s}^2$[/tex] is the acceleration due to gravity and t is the time. We proceed with the solution.

[tex]$$\begin{aligned}v_y & =v_{0 y}-g t \\& =18 \mathrm{~m} / \mathrm{s}-\left(9.81 \mathrm{~m} / \mathrm{s}^2\right)(4 \mathrm{~s}) \\& \approx-20 . \mathrm{m} / \mathrm{s}\end{aligned}$$[/tex]

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