A knock sensor is used where voltage is created by exerting force on a crystal.
What is a force?A force is a pushing or pulling that an object feels as a consequence of engaging with another thing. Every time two objects contact, a force is applied to everything in the system. When the interaction is finished, the force is no more sensed by the two objects. Forces are merely interactions; they do not exist in isolation.
what does a sensor do and what are some examples?A sensor is a tool that collects physical information from its surroundings and transforms it into information that can be used by either a machine or a human to understand. Most sensors (which transform the data into electronic data) are electronic, but some are simpler, such as a glass thermometer that displays visual data.
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A uniform solid 5.25-kg cylinder is released from rest and rolls without slipping down an inclined plane inclined at 18° to the horizontal. How fast is it moving after it has rolled 2.2 m down the plane? O 3.0 m/s O 4.3 m/s O 5.2 m/s O 3.7 m/s O 2.6 m/s
A uniform solid 5.25-kg cylinder is released from rest and rolls without slipping down an inclined plane inclined at 18° to the horizontal. Its speed while rolling down is 3.0 m/s.
The mass of the solid cylinder, [tex]m=5.25 kg[/tex]
The inclination of the plane, θ=[tex]18^{0}[/tex]
The speed of a solid cylinder rolling down an inclined surface is calculated using the following formula:
The kinetic energy of the cylinder
[tex]K=3/5 mgh[/tex]
[tex]1/2mv^{2} =3/5 mgh[/tex]
[tex]v=\sqrt{6gh/5}[/tex]
Substituting for the values h as [tex]h=mgcos[/tex]θ
we get the speed as
[tex]v=3.0 m/s[/tex]
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a long wire of finite resistance is connected to an ac generator. the wire is then wound into a coil of many loops and reconnected to the generator. is the current in the circuit with the coil greater than, less than, or the same as the current in the circuit with the uncoiled wire?
The current in the circuit with the coil is greater than the current in the circuit with the uncoiled wire
What is electric current?Electric current is the flow of electric charge in a circuit.
How to determine the current in the circuit?Since a long wire of finite resistance is connected to an ac generator, in this circuit, we know that the length of wire has a resistance and will draw a current from the generator.
Now, the wire is then wound into a coil of many loops and reconnected to the generator, the wire now has an inductance. In this circuit, the inductance of the wire causes it to draw extra current apart from that drawn by the resistance of the wire.
So, since it draws extra current, thus, the current in the circuit increases when the long finite wire is wound into a coil of many loops.
So, the current with the coil is greater than the current in the circuit with the uncoiled wire
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monochromatic light falls on two very narrow slits 0.044 mm apart. successive fringes on a screen 6.30 m away are 8.9 cm apart near the center of the pattern. part a determine the wavelength of the light.
The wavelength of the light is 6.21 × 10⁻⁷ m.
Single-slit diffraction has an equation
d sin θ = m λ
where
d = the width of slits = 0.044 mm = 4.4 × 10⁻² mm = 4.4 × 10⁻⁵ mm = the ordeFor a small angle, sin θ = tan θ.
θ is the angle where the opposite of the angle is the width apart near the center of the pattern (x) and the adjacent is the distance between the screen from the slits (L). So [tex]tan \: \theta = \frac{x}{L}[/tex]
x = 8.9 cm = 8.9 × 10⁻³ mL = 6.30 md sin θ = m λ
d tan θ = m λ
[tex]d \: \frac{x}{L} \:=\: 1 \times \lambda[/tex]
[tex]\lambda \:=\: 4.4 \times 10^{- 5} \times \frac{8.9 \times 10^{- 2}}{6.3}[/tex]
λ = 4.4 × 10⁻⁵ × 1.41 × 10⁻²
λ = 6.21 × 10⁻⁷ m
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a heat engine is operating between 317 c and -3 c. if the engine extracted 100 mj of energy from fuel, how many mj of energy could be used as mechanical energy?
54.2 MJ of energy could be used as mechanical energy from heat engine operating between 317 c and -3 c and if the engine extracted 100 mj of energy from fuel.
What is mechanical energy ?
Mechanical energy, also known as kinetic energy or potential energy, is the energy that an object possesses when it is in motion or the energy that an object stores due to its location.
According to the given information:
T(high) = -3 °C
T (low) = 317 °C
Fuel extracted = 100 MJ
First we need to convert temperature into kelvin
T(high) = 270 K
T(low) = 590 K
Efficiency = 1 - [tex]\frac{T(high)}{T(low)}[/tex]
Efficiency = 1 - [tex]\frac{270}{590}[/tex]
Efficiency = 1 - 0.458
Efficiency = 0.542
Hence maximum useful work done = 0.542 x 100 MJ
Maximum work done or the amount of energy used as mechanical energy = 54.2 MJ
Hence the maximum amount of useful work extracted from the heat engine is 54.2 MJ
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Consider points A, E, and G. Of these three points, which one corresponds to the greatest magnitude of acceleration of the particle?
Answer: A
A one corresponds to the greatest magnitude of acceleration of the particle.
What is acceleration?
Any procedure where the velocity varies is referred to as acceleration. There are only two ways to accelerate: changing your speed or changing your direction, or changing both. This is because velocity is both a speed and a direction.
The graph given is of Kinetic energy rs position. Kinetic energy [tex]$K \cdot[/tex] [tex]E=\frac{1}{2} m v^2$[/tex]. Since mass ' m ' is Constant we can write K.E [tex]$\propto v^2$[/tex]
So when kinetic energy is maximum, speed is maximum. when kinetic energy is changing/increasing at maximum rate implies speed is also increasing at maximum rate implies acceleration is maximum. So when acceleration of the particle is zero, slope is zero. ie rate of change of kinetic energy is zero. So the answers ave:
1) Acceleration zero: B, D, F & H.
2) A, E, G; out of these 3 points, at[tex]$A^{\prime}$[/tex] the slope is maximum.
[tex]$\Rightarrow$[/tex]At 'A', acceleration is maximum.
3) Maximum[tex]$K \cdot E \Rightarrow$[/tex] highest point : 'B' Corresponds to highest K.E.
4) Lowest speed corresponds to lowest kinetic energy. [tex]$\Rightarrow$[/tex] ' D '
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shows two masses at rest. the string is massless and the pullies are frictionless. the spring scale reads in kg. what is the reading of the scale?
The reading of the scale due to the two masses, massless string and the frictionless pullies is 0.
When the strings have frictionless pullies, they perform a rotary motion with the pulleys.
Net force of the masses
The two masses are connected by massless spring.
Since the masses are at rest, the sum of all the forces acting on the scale will be zero.
Fnet = o
T + M1g - M2g = 0
M1 and M2 are the masses at rest respectively.
T = M2g - M1g
Reading on the scale
Since the two given masses have same mass then their product with 'g' is and their difference is zero.
The reading of the scale is equal to the tension in the pulley connecting the two masses.
The tension on the pulley is calculated as follows;
T = Mg - Mg
T = 0
Thus, the reading of the scale due to the given masses is 0.
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a 230kv, 60hz, three phase completely tranposed overhead line has one acsr 954 kcmil conductor per phase and flat horizontal phase spacing, with 8 m between adjacent conductors. determine the inductance and the inductive reactance
The Inductance and Inductive Reactance of the conductor is 1.315 x 10⁻⁶H/m and 0.496ohm/km respectively.
A type of inductor is a device that runs on magnetism or magnetic fields. Transformers, coils, motors, and generators are examples of inductors. Current and voltage can become out of phase and inefficient when an inductor is used in a circuit if the problem isn't fixed.An EMF is continuously produced in an inductive AC circuit where the current is constantly changing. This EMF's impact is measured in ohms because it fights against the ongoing change in the flowing current. Inductive reactance (XL) is the term used to describe this resistance of the inductance to the flow of an alternating current.The inductance of the circuit and the rate at which the current is changing through the circuit both affect the value of XL in any circuit. The applied voltage's frequency affects this rate of change.The mathematical illustration of XL is shown in the equation below.
XL = 2πfL.
Ds=0.0123mDe=8.819m
L= 2 x 10⁻⁷ x log [8.819/0.0123]
L=1.315 x 10⁻⁶H/m
XL=2 x 3.14 x 60 x 1.315 x 10⁻⁶=0.496ohm/km
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which lighting method has a light source placed inside the surface of a partially reflective dome, with the camera focused on the object through a hole in the middle
Diffuse dome lighting method has a light source placed inside the surface of a partially reflective dome, with the camera focused on the object through a hole in the middle.
What is Diffuse dome lighting?
Machine vision dome lights, commonly referred to as "cloudy-day illumination," produce diffuse lighting. Reflected light offers gentle, shadow-free lighting that is non-directional and non-directional. At close working distances, this effect is ideal for scrutinizing highly specular, curving objects.
The CCD stands for a Charge Coupled Device, which is a semiconductor element that converts images into digital signals.
Cameras are used by machine vision to collect visual data from the surroundings. It then prepares the data for usage in various applications by processing the photos using a mix of hardware and software. Specialized optics are frequently used in machine vision technologies to capture pictures.
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each of these frames shows the migration (due mostly to solar rotation) of sunspots across the face of the sun with the earliest sketch at the top. if the north pole of the sun is at the top of each frame, in which direction does the sun rotate?
The sun rotates in the counterclockwise direction when viewed from above the North Pole of the Sun.
The Sun rotates on its axis approximately once in 27 days. This rotation was first discovered by observing the motion of the Sun. The Sun's axis of rotation is tilted by about 7.25 degrees from the axis of Earth's orbit, so we see most of the Sun's north pole in September and most of its south pole in March each year. The Sun's "surface" that is visible, up to the photosphere. The powerful magnetic fields in the vicinity of sunspots produce active regions on the Sun that often generate disturbances such as solar flares and coronal mass ejections (CMEs). Because they are colder than their surroundings, sunspots seem "black.". The average number of spots on the face of the Sun is not constant, but varies over a multi-year cycle.
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this buoy is located 260 km from the coast of new jersey. based on the wave speed at the time of maximum wave height it would take about 4.5 hours for these waves to travel from the buoy to the coastline. does that seem slow or fast to you?
That seems relatively fast to me. Wave speed is typically between 160 to 320 km/h, so the 4.5 hours it would take for these waves to travel from the buoy to the coastline is in line with the expected wave speed.
What is Wave?
A wave is a spreading dynamic disturbance (transition from equilibrium) with one or even more quantities in physics, mathematics, as well as related fields. When a wave is periodic, its constituent parts repeatedly oscillate around an equilibrium (resting) valuation at a given frequency. A travelling wave is defined as one in which the a whole waveform moves inside one direction; in contrast, a standing wave is defined as a pair of superimposed promotes the flow moving in the opposite directions. In a standing wave, the vibration's amplitude nulls out at certain locations where the wave's amplitude appears smaller and even zero. Wave equations, which are standing wave fields of two opposing waves, or one-way wave equations, which describe the propagation of a single wave in a specific direction, are frequently used to describe waves.
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an lrc series circuit consists of an 85.0- ω resistor, a 14.0-μf capacitor, a 1.50-mh inductor, and a variable frequency ac source of voltage amplitude 13.25 v. at what angular frequency will the inductive reactance be 4.00 times as large as the capacitive reactance?
The inductive reactance is 4.00 times as large as the capacitive reactance is 10.1 Hz or 6.26 radians/sec.
What is inductive reactance?
The resistance provided by the inductor inside an AC circuit to a flow of ac current is known as inductive reactance. Its measurement unit is the ohm (Ω), and its symbol is (XL). For lower frequencies, inductive reactance is typically low, and for higher frequencies, it is high. However, it is insignificant for constant DC current.
The angular frequency (ω) at which the inductive reactance (XL) is 4.00 times as large as the capacitive reactance (XC) is given by the following equation:
XL = 4.00 XC
ωL= 4.00 ωC
where ωL is the angular frequency for the inductor and ωC is the angular frequency for the capacitor.
The angular frequency for the capacitor is given by the following equation:
ωC = 1/(2πRC)
where R is the resistance in ohms and C is the capacitance in farads.
Therefore, substituting the given values of R = 85.0 ohms and C = 14.0 μF, we have:
ωC = 1/(2π*85.0*14.0*10-6) = 2.47 radians/sec
The angular frequency for the inductor is given by the following equation:
ωL = 2πFL
where F is the frequency of the AC source in hertz and L is the inductance in henries.
Therefore, substituting the given values of F = variable and L = 1.50 mH, we have:
ωL = 2π*variable*1.50*10-3 = 6.28*variable radians/sec
Combining the two equations, we have:
6.28*variable = 4.00*2.47
Solving for the variable, we get:
variable = 6.28*4.00/2.47 = 10.1 Hz
Therefore, the angular frequency at which the inductive reactance is 4.00 times as large as the capacitive reactance is 10.1 Hz or 6.26 radians/sec.
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Find the magnitude of the acceleration of the block after the system is released from rest.
Express your answer in terms of the variables , , and appropriate constants.
ANSWER:
ablock = 3.27
The magnitude of the acceleration of the block after the system is released from rest is: ablock = 3.27
What is magnitude?
Just as the magnitude of an earthquake indicates its strength, the magnitude of a mathematical term indicates its magnitude. In mathematics, this means how far a mathematical term is from zero.
For numbers like 1, 2, 3, the magnitude is simply the number itself. If the number is negative, the magnitude is the absolute value of the number. For example, the magnitude of 10 is 10. The magnitude of -10 is the absolute value of -10, which is 10. In both cases, the magnitude is the distance from zero of the mathematical term. Both 10 and -10 are 10 distances from zero.
Thus, The magnitude of the acceleration of the block after the system is released from rest is: ablock = 3.27
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a small light fixture on the bottom of a swimming pool is 1.22 m below the surface. the light emerging from the still water forms a circle on the water surface. what is the diameter of this circle? (give your answer, in m, to at least two decimal places.)
1.22 m below the surface of a swimming pool's bottom lies a little light fixture. The circumference of this circle is 2.27 m.
What does life's light mean?One of the fundamental and common symbols is light. It is the holy and the spiritual; it is wisdom and insight. Light is the wellspring of kindness and the true truth; according to Buddhist belief, it also follows transcendence into Nirvana.
Briefing:The critical angle is found by imagining the refracted ray just grazing the surface (θ₂ = 90°). The index of refraction of water is n₁ = 1.333, and n₂ =1.00
for air, so n₁ sin∅c = n₂ sin90° gives ∅c =sin⁻¹ (1/1.333)= sin⁻¹ (0.750)=48.6°
The radius then satisfies
tan∅c = r/1.00m
So the diameter is
d=2[(1.00m)tan∅c]
d=(2.00m)tan48.6° = 2.27m
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An 82.0-kg person rides on a carnival ride in a 45.0-kg basket supported by a single chain. When the ride reaches its top speed, the basket moves at a constant speed in a horizontal circle with a radius of 7.10 m. At this point, the chain supporting the basket is at a 45.0 angle to the vertical.
The chain supporting the basket is at a 45° angle to the vertical and horizontal component is 1244.6N.
What is constant speed?When an object's speed stays the same and neither increases nor decreases, we say it is moving at a constant speed.
Mass of the person is 82kg and mass of the basket is 45 kg.
New total mass, M = 82+45 = 127kg.
Here, Fe is centrifugal force
v is velocity of the person
r is radius of the circle,
r = 7.1m
Now, Tsin 45° = Mg [ here Mg is weight of person and basket]
T = Mg/sin 45° = Mg√2
Now, vertical component of the tension,
Fy = Tsin 45° = Mg = (127×9.8)kg-m/s²
Fy = 1244.6N
Now, horizontal component,
Fx = Tcos 45°
Fx = Mg/Tan 45°
Fx = Mg/1
Fx = 1244.6N
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imagine that a tank is filled with water the height of the liquid column is 7 and the area is 1.5 square meters into the second power what's the force of gravity acting on the column of water
The force of gravity acting on the column of water is 1,02,900 N.
Given that, height of the liquid column is 7
Area = 1.5 m²
We know that, volume of water = 1.5* 7 = 10.5 m³
10.5 m³ when converted into litres can be written as 10,500 litres
Water mass = 10,500 litres * (1kg/litre) = 10,500 kg
Force of gravity on water is nothing but weight of the water
⇒ 10,500* 9.8 = 1,02,900 N
Pressure on the bottom of the tank = 1,02,900/1.5 = 68,600 N/m² = 68,600 pascal
Thus, the force of gravity acting on the column of water is calculated to be 1,02,900 N.
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Each of the following statements was either true for Mars in the distant past (early Mars) or is true for Mars today. Sort the statements by dragging each into the correct bin.Early Mars (more than 3 billion years ago):
Strong greenhouse effect.
Substantial volcanism and outgassing.
Strong magnetosphere.
Some craters held lakes of water.
Core convection.
Mars Today:
Surface pressure too low for stable liquid water.
Solar wind strips atmospheric gas.
Very weak greenhouse effect.
Early Mars (extra than three billion years in the past) strong greenhouse effect. Substantial volcanism and outgassing. Strong magnetosphere.
*Some craters held lakes of water.
*Core convection.
Mars Today:
*Surface pressure too low for stable liquid water.
*Solar wind strips atmospheric gas.
*Very weak greenhouse effect.
A gas is a substance that has no constant size or form. Whilst inside a closed container, gasoline will amplify to fill the field. An instance of gas is the air you breathe. The gas interior of your digestive tract is fabricated from the air and different gases.
Traits of Gases :
* Gases have neither definite shape nor particular volume.
* Gases are fluid and go with the flow effortlessly.
* Gases have low density, except compressed.
* Gases diffuse (mix and unfold out) and effuse (tour thru small holes).
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What is the energy, in j, of light that must be absorbed by a hydrogen atom to transition an electron from n = 3 to n = 6?.
The energy absorbed by Hydrogen atom to transit an electron from n = 3 to n = 6 is 1.815x10-19 Joules
What is Energy level ?Energy Level: According to the Bohr atomic model, energy levels—also known as electron shells—are thought of as the orbits that electrons in an atom's nucleus take. Electrons must always be in one of the energy levels and never in the space between them since the energy levels represent defined distances.
According to the given information
Change in energy = [tex]-13.6eV \frac{1}{n_{f} ^{2} }-\frac{1}{n_{i} ^{2} }[/tex]
= -13.6 × 1.6 × [tex]10^{-19}[/tex] ( [tex]\frac{1}{6^{2} }[/tex] - [tex]\frac{1}{3^{2} }[/tex] )
= 21.76 × [tex]10^{-19}[/tex] × 0.084
= 1.815 × [tex]10^{-19}[/tex] J
Change in Energy level = 1.815 × [tex]10^{-19}[/tex] J
The energy absorbed by Hydrogen atom to transit an electron from n = 3 to n = 6 is 1.815x10-19 Joules
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A 50 kg ice skater moving at 6 m/s collides with a second stationary skater with mass 70 kg. The skaters cling together after the collision and move without friction. compute their speed after the collision.
Their speed after collision is 2.5.
What is the reason for this?
An ice skater with a mass of 50 kg is moving at a speed of 6m/s.
The ice skater with 50 kg mass collides with a second stationary skater whose mass is 70 kg.
These skaters cling together after the collision and they also move without friction.
Their speed after the collision would be as follows:
Formula: mv = mv
from above information, we know that
Mass of first skater is m= 50 kg
Speed of first skater v= 6m/s
Mass of second skater is m= 70 kg
Speed after collision v=?
mv = mv
50 x 6 = (50 + 70) v
v = 50 x 6 / 120 = 2.5
So therefore, their speed after collision would be 2.5.
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if it is known that the toggle clamp is a machine, what assumptions can be made about it? check all that apply. (you must provide an answer before moving to the next part.)
A toggle clamp is a tool that you use to firmly secure components or pieces in place, frequently but not always as part of a production process.
What is toggle clamp?A toggle clamp is a device that you employ, often but not exclusively as part of a production process, to firmly place components or parts in place. A toggle clamp's main characteristics are its rapid action and ability to be easily turned on and off by an operator.
Toggle clamps also lock in place firmly. Because of this, toggle clamps are frequently employed in production lines where components need to be held firmly and quickly removed during routine manufacturing procedures.
Toggle clamps come in six primary categories: vertical toggle clamps, horizontal toggle clamps, plunger toggle clamps (also known as push action toggle clamps), hook action toggle clamps, plier action toggle clamps, and cam action toggle clamps.
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Nuclear decay occurs according to first-order kinetics. Argon-37 decays with a rate constant of 0. 0198 days–1. After 98. 3 days, a sample has a mass of 2. 14 g. What was the original mass of the sample?.
The original mass of the sample was 14.79 grams.
We know that rate of reaction of first order reactions is given by: [tex]kt = 2.303* log(R'/R)[/tex]
where k = rate of reaction = 0.0198
t = time = 98.3 days
R = final mass = 2.14 grams
Putting these values in above equation we get R' = 14.79 grams.
i.e. The original mass of the sample was 14.79 grams.
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you are the science officer on a visit to a distant solar system. prior to landing on a planet you measure its diameter to be 1.8 × 107 m and its rotation period to be 22.3 hours. you have previously determined that the planet orbits 8.6 × 1011 m from its star with a period of 402 earth days. once on the surface you find that the acceleration due to gravity is 63.6 m/s2. what are the mass of (a) the planet and (b) the star? (g
The mass of the star of the distant solar system is 82 * 10²² kg and the mass of the planet of the distant solar system is 8.58 * 10²⁵ kg
The planet stays in its orbit and moves in a centripetal motion due to the gravitational force of attraction between the planet and the star.
Fc = m v² / r
Fg = G M m / r²
Fc = Fg
m v² / r = G M m / r²
v² = G M / r
M = r v² / G
g = Acceleration due to gravity
G = Gravitational constant
M = Mass of star
r = Distance between both bodies
G = 6.67 * 10⁻¹¹ N m² / kg²
r = 8.6 * 10¹¹ m
T = 402 days = 3.47 * 10⁷ s
v = 2 π r / T
v = 2 * 3.14 * 8.6 * 10¹¹ / 3.47 * 10⁷
v = 15.56 * 10⁴ m / s
Ms = 8.6 * 10¹¹ * 15.56 * 10⁴ / ( 6.67 * 10⁻¹¹ )
Ms = 20.1 * 10²⁶ kg
F = G M m / r²
F = m g
Equating,
m g = G M m / r²
Mp = g r² / G
Mp = 63.6 * ( 1.8 * 10⁷ / 2 )² / 6.67 * 10⁻¹¹
Mp = 8.58 * 10²⁵ kg
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a single-turn square loop of side $l$ is centered on the axis of a long solenoid. in addition, the plane of the square loop is perpendicular to the axis of the solenoid. the solenoid has 1370 turns per meter and a diameter of 7.70 cm, and carries a current of 3.11 a. calculate the magnetic flux through the loop when $l$
The statement predicts magnetic flux toward being 37.82*10⁻⁷ Wb, 131.73*10⁻⁷ Wb and 131.73*10⁻⁷ Wb
What does an automobile solenoid do?It typically sits between the engine and the ignition module of your car. When the automobile key is turned, solenoids (also known as start solenoids or starter relay) operate by combining big electric pulses from your vehicle's charge with smaller electrical impulses from ignition system.
Briefing:(a). Flux is given by
Ф= BACosФ
μ₀ηIL² cos0
= 4*π*10⁻⁷*1370*3.11*0.0275²
= 37.82*10⁻⁷ Wb
(b). Here diameter and length are equal
Ф = BACosФ
= μ₀ηI(π(L/2)²)cos 0
= 4*π*10⁻⁷*1370*3.11*3.14*(0.028)²
= 131.73*10⁻⁷ Wb
(c). Here as length is greater than diameter the flux will be same as flux on solenoid
Ф = 131.73*10⁻⁷ Wb
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The complete question is-
A single-turn square loop of side L is centered on the axis of a long solenoid. In addition, the plane of the square loop is perpendicular to the axis of the solenoid. The solenoid has 1370 turns per meter and a diameter of 7.70 cm, and carries a current of 5.11 A.
Part A: Find the magnetic flux through the loop when L= 2.75 cm .
Part B: Find the magnetic flux through the loop when L= 5.60 cm .
Part C: Find the magnetic flux through the loop when L= 13.5 cm .
an object with a mass of 13.29 kg experiences force of 14.35 N . What is the acceleration of the object?
____________________________________________________
We are given the following:
[tex]Mass=13.29kg[/tex][tex]Force=14.35N[/tex][tex]Question:[/tex] What is the acceleration of the object?Given the formula for finding acceleration, we fill in the blanks.
[tex]A=14.35*13.29[/tex]
[tex]A=190.7115=190.7[/tex] ← Acceleration/Final Solution
_____________________________________________________
Hope this helps!
Imagine a ball that is pushed off a desk completely horizontal and falls 9.47 m down to the floor. If it landed 3.32 m away from the edge of the desk, how fast was it moving in the horizonal direction just before it hit the ground? Round to 1 decimal.
The ball was moving at 11.1 m/s in the horizontal direction just before it hit the ground.
What is horizontal direction?
Horizontal direction is a term used to describe a direction parallel to the horizon. It is an important concept in navigation and surveying, since it helps to determine a person's geographic location. Horizontal direction is usually expressed as an angle, measured clockwise from the direction of true north. It is important to remember that the angle for horizontal direction increases as the person turns clockwise from true north. For example, if a person were facing north, their horizontal direction would be 0°. If they were facing northeast, their horizontal direction would be 45°. In addition to its use in navigation, horizontal direction is also used in architecture and engineering. For example, when designing a building, architects use horizontal direction to determine which way the building should face in order to maximize the amount of natural light that enters the building.
We can use the equation vf^2=vi^2 + 2ad, where vf is the final velocity, vi is the initial velocity, a is the acceleration due to gravity (9.8 m/s^2) and d is the displacement.
In this case, vf = 0 m/s (since the ball has stopped moving at the end of its fall), vi = unknown, a = 9.8 m/s^2, and d = 3.32 m.
We can rearrange this equation to solve for vi: vi = sqrt(vf^2 - 2ad)
vi = sqrt(0^2 - 2(9.8)(9.47)) = -11.1 m/s
Since the velocity is negative, it is moving in the opposite direction of the displacement. Therefore, the ball was moving at 11.1 m/s in the horizontal direction just before it hit the ground.
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what is the speed of visible light waves when traveling through a vacuum? about 3 cross 10^8 m/s about 350 m/s about 1 cross 10^8 m/s light waves cannot travel through a vacuum. about 2 cross 10^8 m/s
The speed of visible light waves when travelling through a vacuum is about 3 X 10⁸ m/s.
What is electromagnetic waves?
In terms of science, electromagnetic radiation is made up of electromagnetic field waves that travel over space while carrying radiant electromagnetic energy. It consists of X-rays, gamma rays, microwaves, infrared, light, and radio waves. These waves are all a component of the electromagnetic spectrum.
The speed of electromagnetic waves, which includes visible light, radio light and x-rays is 3 X 10⁸ m/s. This is same as that of the speed of visible light in the presence of air.
The speed of light is depicted using the letter 'c', and it a universal constant value. It is a physical constant and important in many areas of physics.
The speed of light in water is 2.25 X 10⁸ m/s and that in glass is 2 X 10⁸ m/s. The speed varies with respect to the medium.
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A parallel-plate air-filled capacitor is being charged as in the figure (Figure 1) . The circular plates have radius 4.00 cm , and at a particular instant, the conduction current in the wires is 0.570 A .
a) What is the displacement current density jD in the air space between the plates?
b)What is the rate at which the electric field between the plates is changing?
c) What is the induced magnetic field between the plates at a distance of 1.93 cm from the axis?
d) What is the induced magnetic field between the plates at a distance of 1.10 cm from the axis?
a) Displacement current density for the capacitor is 113.4 A/m²
b) Rate of change of the electric field is 1.48157826 V/m.s
c) Magnetic field between plates at r of 1.93 cm is 5.563×10⁻6 Tesla
d) Magnetic field between plates at r of 1.10 cm is 7.833 x 10-7 Tesla
Since we are given the radius of a parallel-plate capacitor which is 4.00 cm( 0.04 m) and the Conduction current = Ic = 0.570 A .we know the formula for the Displacement current density is
JD = Id/A, where Id is the conduction current and A is the area of the capacitor, and A= πr² = π(0.04)²= 0.005024 m². As we know conduction current has equal displacement between the capacitor plates so Id = Ic
JD = 0.570/0.005024 = 113.4 A/m²
For the second case, we know the rate of change of the electric field is:
dE/dt = JD/ε₀ , where JD is the displacement current density and ε₀ is the permittivity of free space ( 8.854×10⁻¹² C²/N.m²)
so, dE/dt = 113.4/8.854×10⁻¹² =1.48157826 V/m.s
for the third case, the formula for The induced magnetic field between the plates will be :
B = (μ₀/2)*JD*r, μ₀ is the permeability of free space(4π×10⁻⁷ T.m/A)and r is the distance from the axis.
B = (4π×10⁻⁷/2)*113.4 *0.01953
B = 5.563× 10⁻⁶ Tesla ,and for the last case, for the radius of 1.10 cm (0.011 m)
B = (μ₀/2)*JD*r
B = (4π×10⁻⁷/2)*113.4 *0.011
B = 7.833 x 10⁻⁷ Tesla
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how much work must the spacecraft engines perform to move the spacecraft to a circular orbit that is 4500 km above the surface? express your answer with the appropriate units.
The amount of work that the engine of the spacecraft must do to move above the circular orbit is 1.48 x 10⁻¹⁷ mM (Joules).
Why is an orbit circular?The established fact that the gravitational attraction between two objects varies also on square of their distance leads to the geometry of planetary orbits. The attractive product of two items decreases to a fourth of its initial amount when the distance between them is doubled.
Briefing:W = Fd
where;
F is the spacecraft's gravitational field,
d is the displacement of the spacecraft.
The spacecraft's gravitational pull is specified as;
F = GmM/R²
where;
m is the planet's mass (for the circular orbit)
M is the spacecraft's mass.
R is the spacecraft's displacement.
The tasks that the spacecraft must complete are as follows:
W = FR
W = GmM/R² x R
W = GmM/R
W = (6.67 x 10⁻¹¹ x mM) / (4500000)
W = 1.48 x 10⁻¹⁷ mM (Joules)
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1. If a car travels 40m in 30 seconds how fast is it
going?
Answer: 80 mph
Explanation:
4. A 20-kg box sits on an incline of 30° from the horizontal. The coefficient of friction between the box and the incline is o.30. Find the acceleration of the box down the incline.
The box accelerates down the incline at 2.4m/s^2.
How do you find the acceleration of an incline box?A mass m particle will slide down a smooth inclined plane if it is released onto it with a friction force F=0. We resolve in the direction of motion to determine the particle's acceleration as it slides. F = ma, mg cos(90) = ma, gg cos(90) = a, gg sin() = a.
By using zigmaFx = max, we will determine the acceleration.
However, we must first determine the friction force Ff.
Because cos 30 degree = 0.866 and Fy = ma y = 0 result in FN - 0.87mg = 0, we may calculate FN as (0.87)(20Kg)(9.81 m/s2) = 171N.
From Ff = mue FN = 0.30)(171 N)= 51N, we can now calculate Ff.
We get Ff - 0.50mg = ma x 51N - (0.50)(20)(9.81)N = (20kg)(ax) from the expression zigmaFx = max, where ax = -2.35 m/s2.
At 2.4 m/s2, the box quickens its descent of the hill.
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Strength training is beneficial because it decreases your risk of injury. Which statement BEST describes why this is true? A. Muscular fitness training can prevent or improve diabetes and sarcopenia. B. Muscular fitness training increases muscle mass, which increases your metabolism. C. Muscular fitness training strengthens tendons, ligaments, and cartilage. D. Muscular fitness training improves self-image and athletic performance. Please select the best answer from the choices provided. A B C D
Answer: B. Muscular fitness training increases muscle mass, which increases your metabolism