Need help badly, please answer!

Just the pull from the rope's tension acts horizontally on mass 1, functioning as the only force. In this case, T=m1*F/(m1+m2) represents the tension (again, the acceleration is the same because of the rope and the lack of friction, I think).

The blocks with masses of 1 kg and 2 kg lie on a rough horizontal surface and are joined by a spring. It is not strained to any degree. K=2 N/m represents the spring constant. Blocks and a horizontal surface interact with each other with a 0.5 coefficient of friction.

The masses shift in such a way that the string's length between P1 and P2 is parallel to the inclined plane.

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Magnitude of the force required to give the helicopter an acceleration of 0.10g upward is 0.981m N, where m is the mass of the helicopter in kilograms.

Physical quantity which causes or tends to cause a motion in any object at rest or changes or tends to change the direction of motion of a moving object or shape or size of object is called force.

Force required to give a helicopter of mass m an acceleration of 0.10g upward can be calculated using Newton's second law. Here, the acceleration is 0.10g, which can be expressed as:

a = 0.10g = 0.10 * 9.81 m/s² = 0.981 m/s²

F = ma

F = m * 0.981

Therefore, magnitude of the force required to give the helicopter an acceleration of 0.10g upward is 0.981m N, where m is the mass of the helicopter in kilograms.

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The charge stored on the capacitor is 702 × 10^-12 C.

A capacitor is a device that stores an electric charge. It consists of two conductors separated by an insulator, which is often called a dielectric.

Capacitance is a measure of a capacitor's ability to store an electric charge. It's measured in farads (F) or picofarads (pF).A capacitor stores electrical energy in the form of an electric field.

The charge that is stored on a capacitor depends on the capacitance of the capacitor, as well as the voltage applied across the capacitor. The formula for calculating the charge stored on a capacitor is Q = CV,

where Q is the charge stored on the capacitor, C is the capacitance of the capacitor, and V is the voltage applied across the capacitor.

The capacitance of the capacitor is given as 13 pF and the voltage applied across the capacitor is 54 V.

Q = CVQ = 13 × 10^-12 F × 54 VQ = 702 × 10^-12 CTherefore, the charge stored on the capacitor is 702 × 10^-12 C.

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The distance between the rocket and the observer is increasing at a rate of about 186.6 m/s.

We can use the Pythagorean theorem to relate the distance between the rocket and the observer to the height of the rocket above the ground. Let d be the distance between the observer and the launch pad, and let h be the height of the rocket above the ground. Then,

d^2 = h^2 + 3^2 (1)

We can take the derivative of both sides of equation (1) with respect to time to get,

2d (dd/dt) = 2h (dh/dt) (2)

where (dd/dt) is the rate of change of distance between the observer and the rocket, and (dh/dt) is the rate of change of height of the rocket.

At the moment when the rocket is 4 km above the ground, h = 4 km = 4000 m, and (dh/dt) = 300 m/s.

Substituting these values into equation (2) and solving for (dd/dt),

dd/dt = (h/d) x (dh/dt) = (4000 m / √(4000^2 + 3000^2) m) x (300 m/s)

≈ 186.6 m/s

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Answer:

By the law of conservation of momentum, the total momentum of the system before and after the push must be equal. Therefore, we can use the following equation to solve for Jill's velocity:

(mass of Jack) x (velocity of Jack) = (mass of Jill) x (velocity of Jill)

Plugging in the given values, we get:

(64.3 kg) x (2.19 m/s) = (45.4 kg) x (velocity of Jill)

Solving for the velocity of Jill, we get:

velocity of Jill = (64.3 kg x 2.19 m/s) / 45.4 kg = 3.10 m/s (eastward)

Therefore, Jill's body is propelled eastward with a velocity of 3.10 m/s.

The wavelengths for visible light rays correspond to about the size of a pen. Option a is correct.

Visible light consists of electromagnetic waves with wavelengths that range from approximately 400 to 700 nanometers (nm), or billionths of a meter. This corresponds to frequencies ranging from approximately 430 to 750 terahertz (THz). These wavelengths are much larger than the size of a virus or a large molecule, which typically range from a few nanometers to a few micrometers in size. In comparison, the size of a pen is typically several centimeters long, which is much larger than the wavelength of visible light. Hence, option a is correct choice.

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Answer: C.

about the size of an amoeba

Explanation: ed mentum or plato

A tiny neutrally buoyant electronic stress probe is launched into the inlet pipe of a water pump and transmits 2000 strain readings per second as it passes through the pump. This is a lagrangian measurement.

Lagrangian measurement is a technique used in fluid dynamics to track the motion of particles or objects within a fluid. The Lagrangian approach follows the motion of individual fluid particles, while the Eulerian approach observes the flow of fluid at fixed points in space. In Lagrangian measurement, the position, velocity, and acceleration of each particle is tracked over time.

Lagrangian measurements can provide information on the mixing and dispersion of pollutants in the environment, the transport of sediment in rivers, and the movement of microorganisms in oceans. Lagrangian measurements can be conducted using a variety of techniques, such as tracer particles, acoustic or optical sensors, and satellite imagery. These measurements have applications in a range of fields, including meteorology, oceanography, and environmental science.

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The focal length of the mirror is  8.57 cm.

The focal length is the distance between the mirror and the focal point.

For a convex lens the focal point is that point at which parallel rays will be focused after passing thru the lens.

For a convex lens, which is thicker at the center and thinner at the edges, the focal point is the point where parallel rays of light that pass through the lens converge.

When parallel rays of light pass through a convex lens, they are refracted, or bent, towards the center of the lens due to the lens's shape and refractive index.

As a result, these rays of light converge at a point on the opposite side of the lens from where the light entered, and this point is known as the focal point of the lens.

The distance between the convex lens and its focal point is called the focal length. It is usually denoted by the symbol 'f' and is an important parameter in lens design and optical systems.

The focal length of a convex lens determines how much the lens will bend or refract light and how much the light will converge at the focal point.

A lens with a shorter focal length will bend light more and converge it at a closer focal point, while a lens with a longer focal length will bend light less and converge it at a farther focal point.

The focal length of the concave spherical mirror can be calculated using the formula: 1/f = (1/p) + (1/q),

where p is the distance from the object to the mirror (13.2 cm) and q is the distance from the image to the mirror (14.0 cm).

Therefore, the focal length of the mirror is 8.57 cm.

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Once body density is determined as with hydrostatic weighing and air displacement plethysmography, percent body fat can be calculated using the Siri equation. Body density refers to the measurement of an individual's body mass. It is the mass of an individual's body divided by the volume of their body.

It is expressed in kilograms per cubic meter in SI units. Body density can be used to calculate body fat percentage. Body fat percentage, also known as adiposity index, is the amount of body fat present in an individual's body divided by their total body mass. Body fat is essential for proper functioning of the body, but it needs to be maintained in the right amount for overall health and well-being.

Percent body fat calculation using the Siri equation Once the body density is determined, percent body fat can be calculated using the Siri equation. The Siri equation is expressed as: Percent body fat = [(4.95/Body Density) - 4.50] x 100The Siri equation is an accurate way of calculating percent body fat. It uses body density as its basis for measurement.

Body density is determined by measuring the mass and volume of the individual's body. Hydrostatic weighing and air displacement plethysmography are the two most common methods for determining body density. These methods are accurate and reliable for body density measurement.

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The 5-volt reading we can expect between the two test points if the reference lead is on the lowest voltage.

The given data is as follows:

The first test marked voltage = 5 volts

The second test marked voltage = -3.3 volts

Let us assume that the two test points are there is a conductive track between them, the voltage between the two points can be calculated using the voltage difference between the two test points.

The voltage difference between the  two test points is calculated as:

5 volts - (-3.3 volts) = 8.3 volts

If the reference lead is on the lowest voltage, It means that the negative side of the voltmeter is attached to the test point with the lower voltage which is -3.3 volts.

The voltage difference between the  two test points is

8.3 volts - 3.3 volts = 5 volts

Therefore we can conclude that the 5-volt reading we can expect between the two test points.

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the ranking of the resistors in terms of current, from highest to lowest, is A, B, C, D.

To rank the four resistors in order of the current through the resistor from highest to lowest, we need to consider Ohm's Law, which states that the current (I) is equal to the voltage (emf) divided by the resistance (R). Mathematically, this is represented as I = emf / R.

Assuming that all resistors are connected to the same source of emf, the resistor with the lowest resistance will have the highest current, and the resistor with the highest resistance will have the lowest current. Therefore, we can rank the resistors based on their resistance values:

1. A. the 6.00-Ω resistor
2. B. the 8.00-Ω resistor
3. C. the 20.0-Ω resistor
4. D. the 25.0-Ω resistor

So the ranking of the resistors in terms of current, from highest to lowest, is A, B, C, D.

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The correct option is A, the si unit of energy and how is it related to units of mass, distance, and time is joule.

The joule is a unit of measurement used to express energy or work done. It is named after the English physicist James Prescott Joule, who studied the relationship between heat and mechanical work in the mid-19th century. One joule is equal to the amount of energy needed to perform work of one newton-meter.

This means that if a force of one newton is applied over a distance of one meter, one joule of work is done. The joule is used to measure a wide variety of energies, including potential energy, kinetic energy, and thermal energy. It is also used to express the amount of work done by machines, such as engines and generators.

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Complete Question: -

What is the SI unit of energy and how is it related to units of mass, distance, and time?

a. joule

b. watt

c. kilo

d. Newton

To complete the given sentences explaining why the transverse pulse traveling on a rope held by two people reflects in the opposite orientation each time it reaches a person order of the words used is third law, the same, oppose, increase.

When a transverse wave pulse reaches a fixed end of the rope, the displacement of the rope end exerts a force on the object that is keeping the end fixed (in this case, a person). By Newton's third law, the person must exert a force of the same magnitude in oppose direction; otherwise, the end of the rope would not remain stationary but would accelerate in the direction of the force due to the wave disturbance. Because this force acts to increase the force of the incoming wave pulse, it initiates an outgoing wave pulse that is inverted with respect to the incoming wave pulse.

When a transverse pulse traveling on a rope held by two people reaches one of the people, the pulse is reflected in the opposite orientation. This happens because of the interaction between the pulse and the person holding the rope.

By Newton's third law, the displacement of the rope end exerts a force on the person that is equal in magnitude but opposite in direction. If the person did not exert an equal and opposite force, the end of the rope would not remain stationary but would instead accelerate in the direction of the force due to the wave disturbance.

The force exerted by the person opposes the force of the incoming wave pulse, initiating an outgoing wave pulse that is inverted with respect to the incoming wave pulse. This happens due to the conservation of energy and momentum, which are described by Newton's first and second laws. The outgoing pulse has a smaller amplitude than the incoming pulse because some energy is lost in the reflection process.

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The time it takes a planet to complete one full orbital revolution is commonly known as its period. Option a is the correct choice.

The period of a planet refers to the time it takes for the planet to complete one full orbit around its star or sun. This time period is determined by the distance between the planet and the star, as well as the planet's velocity. The period is an important concept in astronomy and is used to calculate a planet's orbital speed, distance, and other orbital parameters. By studying the periods of planets, astronomers can make predictions about their behavior and gain insights into the workings of the solar system and the universe as a whole. Therefore, option a is correct.

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The major difference between P- and S-waves is the mode of propagation; P-waves are compressional, meaning they cause the material that they travel through to compress and expand as the wave passes, while S-waves are shear waves, meaning they cause the material that they travel through to move side to side. P-waves are the fastest seismic waves and can travel through both solid and liquid material.

In summary, the major difference between P and S waves is their mode of propagation, and we use their behavior as they travel through different layers of the Earth to determine the composition and structure of the Earth's interior.

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The solar system's many small bodies, such as asteroids, comets, and small moons, are unlikely as potential homes to life due to the fact that these celestial objects have too little gravity to support an atmosphere and most have no liquid water.

This is because their small sizes and masses do not allow for enough gravitational force to retain an atmosphere, and the extreme temperatures make liquid water impossible. Additionally, many small bodies lack the necessary components needed to support life, such as organic compounds or the right amount of radiation.

Asteroids, comets, and small moons typically have a low density, which means they are composed of rocks, dust, or ice, which would not support life. Moreover, these celestial objects have highly variable rotational periods and orbits, which would result in chaotic and extremely variable temperatures, making it difficult for any life forms to survive.

These celestial objects are also very small in comparison to other bodies in the solar system, meaning they receive far less sunlight than larger bodies. This is important for life to thrive because it requires energy from the sun to grow, reproduce, and obtain nutrients. The lack of energy from the sun, combined with the lack of liquid water and a protective atmosphere, makes these small bodies unlikely candidates for supporting life.

Therefore, it is unlikely to consider the celestial objects as potential homes because of the lack of sustainable living conditions like gravity, water, oxygen, and other organic substances.

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Digital sampling machines are not an example of mechanical action.

Mechanical action refers to the physical movement of mechanical components to produce a sound or perform a specific function. This can include a wide range of actions, such as the striking of hammers on strings in a piano, the rotation of tonewheels in a Hammond organ, or the movement of valves in a trumpet.

Mechanical action can also be found in other types of machinery and equipment, and tools such as engines, gears, and levers, where physical movement is used to perform a specific task or function.

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Therefore, the speed of the satellite must be 7.471 km/s to stay in this circular orbit 785 km above earth's surface.

A rocket releases a satellite into a circular orbit 785 km above the earth's surface. To stay in this orbit, the satellite must be going at a certain speed. To calculate this speed:

`v = sqrt(GM/r)`

where: v is the velocity of the satellite,

GM is the universal gravitational constant (6.67 x 10^-11 Nm^2/kg^2) multiplied by the mass of the earth,

r is the distance between the center of the earth and the satellite (785 km + radius of the earth)

Using the given values:

v = sqrt(6.67 x 10^-11 * 5.97 x 10^24 / (785 + 6,371))v

  = sqrt(3.99 x 10^14 / 7,156)v

  = sqrt(55,825,822)

The velocity of the satellite must be approximately 7,471 m/s or 7.471 km/s to stay in this orbit.

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The electric eel's power output is 222.4 Watts

Given voltage (V) = 278 V

Current (I) = 0.8 A

To find the electric eel's power output, we have to use the formula

P = IV,

Where P is the power output, I is current, and V is the voltage.

So, we can calculate the electric eel's power output as follows:

Power Output (P) = IVP

⇒278 × 0.8

Power Output (P) = 222.4 Watts

Hence, The power output of the electric eel is 222.4 Watts.

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The stone thrown upward from ground level with an initial speed of 176 feet per second will reach a maximum height of: approximately 564 feet

To calculate the maximum height, we must use the equation of motion, which states that the final velocity is equal to the initial velocity plus the acceleration times the time. We know the initial velocity (176 feet per second) and the acceleration is equal to the acceleration due to gravity, which is -32 feet per second squared.

Since we do not know the time, we can solve it using the equation Vf = Vi + at. Solving for t, we get[tex]t = (Vf-Vi)/a[/tex], where Vf is 0 and Vi is 176 feet per second. Thus,[tex]t = (0-176)/(-32)[/tex], and t = 5.5 seconds.

Using the equation of motion, we can find the maximum height by using the equation [tex]H = Vi*t + (1/2)*a*t^2[/tex]. We plug in our values and get[tex]H = 176*5.5 + (1/2)*(-32)*5.5^2 = 564 feet.[/tex]

Therefore, the stone thrown upward from ground level with an initial speed of 176 feet per second will reach a maximum height of approximately 564 feet.

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Electrons from the student's hair to the plastic comb. When the student runs the comb through her hair, the comb and the hair rub against each other. This friction causes the transfer of electrons between the two materials.

Friction is a force that opposes motion between two surfaces in contact. Whenever two surfaces are in contact and one of them moves or tries to move over the other, there is a force that resists the motion. This force is called friction. Friction arises due to the irregularities on the surfaces of the objects in contact. When the two surfaces are pressed together and moved relative to each other, the irregularities interlock and create resistance to motion. The force of friction always acts in the opposite direction to the direction of motion or the direction of the applied force.

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Answer:

Whether the object or fluid is moving, drag occurs as long as there is a difference in their velocities. Because it is resistant to motion, drag tends to slow down the object. An effective way to reduce it is to alter the shape of the object and make it streamline. Drag Force Examples of Drag Force

Explanation:

Answer:

False, Other guy is wrong

Explanation:

The equation is not the same

The second law of thermodynamics states that energy spontaneously flows from high-temperature objects to low-temperature objects until the temperatures are balanced or equal.

The energy quality is reduced when energy changes from one form to another, making it difficult to transform from one form of energy to another, reducing the efficiency of energy conversion.

The second law of thermodynamics is critical to the understanding of energy conversions because it provides a quantitative measure of energy quality, which relates to the ease with which it can be used to perform work.

According to the second law of thermodynamics, the quality of energy tends to degrade over time, resulting in a reduction in efficiency when converting one form of energy to another.

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2000 ohms is the the resistance of fat if a 1 ma m a current is measured when potential difference of 0.5 v v is applied to the patient's arm.

we have r = resistance of the muscle

R = fat resistance

we are given R = 3r

such that the R total would be solved using ohms law:

We would have 3r² / 4r

= 0.75r

when we use the Ohm's law we would have the follwoing calculation

0.5 = 0.001 * 0.75 r

we are to solve for the value of r

0.5 = 0.00075r

divide through by:

r = 0.5 / 0.00075

= 666.667

Remember that R = 3r

R = 3 * 666.667

R = 2000 ohms

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The horizon is approximately 3,474 miles away when viewed from 1.5 miles above the surface of the Earth.

Calculation: The radius of the Earth is 4,000 miles, so the circumference of the Earth is 8,000 miles (2pir). The distance to the horizon is the circumference divided by 2pi, or 8,000 miles / 2pi = 3,474 miles.

The horizon is approximately 1.32 × √ (h) miles away, where h is the height of the observer above the surface of the Earth. Given the Earth's diameter, an observer in a hot air balloon at 1.5 miles above the surface of the Earth would be approximately 1.32 × √ (1.5) miles from the horizon.

The calculation is done as follows.1.32 × √ (1.5) miles= 1.32 × √ (1.5) miles = 1.32 × 1.22 miles= 1.61 miles So, an observer in a hot air balloon 1.5 miles above the surface of the Earth would be approximately 1.61 miles away from the horizon.

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The maximum magnetic energy stored in the space above a city, with an area of 3.40 108 m2 and a height of 1300 m, can be calculated using the equation E = B²V/2, where B is the strength of the Earth's magnetic field (7.0 10-5 t), V is the volume of the space (4.42 10¹⁰ m³), and E is the energy stored. Plugging in the values for B and V, we find the maximum magnetic energy stored in the space above the city to be 6.17 10¹⁵ J.

The Earth's magnetic field is important for providing a protective barrier against dangerous cosmic rays, and for allowing creatures that use magnetoception, such as birds, to navigate.

The Earth's magnetic field is always changing and is generated by electrical currents in the core of the Earth, which are influenced by convection currents and the rotation of the Earth. Even though the energy stored in the Earth's magnetic field is quite small, it still plays an important role in the way the Earth works.

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The magnitude of the force that the child exerts on the seat at the lowest point if his mass is 18.5 kg is 981 N.

To determine the magnitude of the force on the child, we must find the magnitude of the centripetal acceleration of the child at the low point first. We can use the equation:

[tex]a_{c}[/tex] = [tex]\frac{v^{2} }{r}[/tex]

where v = 9 m/s and r = 2 m

thus,

[tex]a_{c}[/tex] = [tex]\frac{9^{2} }{2}[/tex]

[tex]a_{c}[/tex] = 40.5 m/s²

And then, we find out the magnitude of the force that the child exerts on the seat at the lowest point if his mass is 18.5 kg.

∑[tex]f_{y}[/tex] = m × [tex]a_{c}[/tex]

[tex]f_{n}[/tex] - w = m × [tex]a_{c}[/tex]

[tex]f_{n}[/tex] = m × [tex]a_{c}[/tex] + w

[tex]f_{n}[/tex] = (18.5 × 40.5) + 18.5 (9.80)

[tex]f_{n}[/tex] = 981 N

Thus, the magnitude of the force that the child exerts on the seat at the lowest point if his mass is 18.5 kg in N is 981 N.

Your question is incomplete, but most probably your full question was

A mother pushes her child on a swing so that his speed is 9.00 m/s at the lowest point of his path. The swing is suspended 2.00 m above the child’s center of mass.

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Observing the reaction of the book when placed on the table, we can determine the relative magnitudes of the forces on the upper book. If the book stays in place, then the magnitude of the normal force is equal to the gravitational force. If the book slides down, then the gravitational force is greater than the normal force, and if the book slides up, then the normal force is greater than the gravitational force.

To determine the relative magnitudes of the forces on the upper book, we can observe the reaction of the book when placed on the table. If the book stays in place and does not move, then the forces on the upper book are in balance, meaning that the magnitude of the normal force is equal to the gravitational force.

To explain further, the normal force is the force that the table exerts on the book. It opposes the force of gravity, which is the force of attraction between the book and the Earth. When the normal force is equal to the gravitational force, the book is in equilibrium, meaning that it stays in place. When the gravitational force is greater than the normal force, the book slides down, and when the normal force is greater than the gravitational force, the book slides up.

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