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Two circular coils of current-carrying wire have the same magnetic moment. The first coil has a radius of 0.095 m, has 131 turns, and carries a current of 3.9 A. The second coil has 156 turns and carries a current of 10.3 A. What is the radius of the second coil?
m
In a 100 m race, Maggie and Judy cross finish line in a dead heat, both taking 11.4s. Accelerating uniformly, Maggie took 1.80 s and Judy 2.90s to attain maximum speed, which they maintained for the rest of the race. What was Maggie's acceleration..
A 87g arrow is fired from a bow whose string exerts an average force of 130N on the arrow over a distance of 80cm. Illustrate what is the speed of the arrow as it leaves the bow?
To explain why he seems to hang in the air, compute the ratio of the time he is above ymax/2 moving up to the time it takes him to go from the floor to that height. You may ignore air resistance.
The magnetic field has been measured to be horizontal everywhere along a rectangular path x = 22 cm long and y = 5 cm high. Along the bottom the average magnetic field B1 = 1.3 10-4 tesla, along the sides an average magnetic field B2 = 1.0 10-4 te..
The speed of sound in air at room temperature is 340 m/s. What is the frequency of a sound wave in air with wavelength 1.3 m
while Jo moves off in the opposite direction at a speed of 0.946m/s. assuming that friction is negligible, find out Al's mass.
An X-ray tube gives electrons, which start at rest, a constant acceleration over a distance of 23cm. If their final speed is 1.3 x 107 m/s, what are the time they spend accelerating
A ball rolls horizontally with a speed of 8.1m/s off the edge of a tall platform.If the ball lands 6.1m from the point on the ground directly below the edge of the platform
Suppose that a particle accelerator is used to move two beams of particles in opposite directions. In a particular region, electrons move to the right at 9350 m/s and protons move to the left at 1681 m/s. The particles are evenly spaced with 0.085..
Inertia and torque of the rotating bodies.
An L-R-C series circuit, R=150 ohms, L= 0.750H, and C= 1.70x10^-2uF. The source has a voltage amplitude of 140V, What is the average power delivered by the source
A 2 liter aluminum cylinder at 5 °C is filled to the brim with gasoline at the same temperature. If the aluminum and gasoline are warmed to 60 °C, how much gasoline spills out.
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