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A ball rolls down the track starting from rest at a height of h1= 20m. The ball is traveling horizontally when it leaves the bottom of the track, whcih has a height of 9.0m. Find where the ball hits the ground.
Suppose you are using total internal reflection to make an efficient corner reflector, what must be the minimum index of refraction of the material
A bicyclist is finishing his repair of a flat tire when a friend rides by with a constant speed of 3.6 m/s. Two seconds later the bicyclist hops on his bike and accelerates at 2.2 m/s2 until he catches his friend.
You have a 1.0 m long copper wire. You want to make an N -turn current loop that generates a 1.0 mT magnetic field at the center when the current is 1.0 A, What will be the diameter of your coil
A 2000-kg car moving with a speed of 20 m/s collides with andsticks to a 1500kg car at rest at a stop sign. Show that because momentum is conserved in the rest frame, momentum is also conservedin a reference frame moving with a speed of 10 m/s in the..
The second-order fringe of 680 nm light is observed at an angle of 16° when the light falls on two narrow slits. How far apart are the slits
An ideal gas has its pressure cut in half slowly, while being keptin a container with rigid walls. In the process 265KJ of heat isleft in the gas: How much work is done during the process
question the force but not the power required to tow a boat at constant velocity is proportional to the speed. if a
Earth's Atmosphere It is found experimentally that the electric field in a certain region of Earth's atmosphere is directed vertically down. At an altitude of 270 m the field has magnitude 60.0 N/C; at an altitudeof 170 m, the magnitude is 100 N/C..
An astronomer on earth observes two galaxies moving away from each other along a line that passes through the earth. At what speed are the galaxies moving apart relative to each other?
The magnetic force exerted on a 1.3 - m segment of straight wire is 1.6 N. The wire carries a current of 3.1 A in a region with a constant magnetic field of 0.52 T. What is the angle between the wire and the magnetic field?
A satellite is in a circular orbit around and unknown planet. The satellite has a speed of 1.70 x10^4 m/s, and the radius of the orbit is 5.25 x106m. What is the orbital speed of the second satellite
Suppose that the sound level of a conversation is initially at an angry 70 dB and then drops to a soothing 50 dB. Assuming that the frequency of the sound is 500 Hz, determine the (c) initial and (d) final sound wave amplitudes.
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