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1. A 1.0 kg block of ice is resting at the top of a spherical ball of ice that has a radius of 1.0 meters. The block of ice is slightly displaced from the top of the ball and continues to slide away from the top. At what angle does the block of ice leave the surface of the sphere? You will need to use energy concepts to answer this question.
After inverting the tube 100 times, the temperature of the lead shot is found to have increased by 30C
A straight horizontal wire carries a current of 3.55 ?A. A proton is moving above the wire in a direction parallel to it but opposite to the direction of the conventional current in the wire, How far is the proton above the wire
A luge and its rider, with a total mass of 83kg, emerge from a downhill track onto a horizontal straight track with an initial speed of 44m/s. Assume that they stop with the constant deceleration of 2.9 m/s2.
Sam, who's mass is 79 kg, takes off across level snow in his jet powered skis. The skis have a thrust of 204 N and a coefficient of kinetic friction on snow of 0.1. Unfortunatately the skis run out of fuel after only 13 s.
While running a marathon, a long-distance runner uses a stopwatch to time herself over a distance of 100. How long will it take her to run a mile at this speed
A 20-cm-radius ball is uniformly charged to 88nC, What is the ball's uniform charge density (C/m3) and What is the electric field strength at points 5, 10, and 20 cm from the center
For the motion from the initial free until the piece of wood comes to rest, what is the total amount of work completed by friction.
A 15 g rifle bullet traveling 205 m/s buries itself in a 3.4 kg pendulum hanging on a 2.6 m long string, which makes the pendulum swing upward in an arc. Find out the vertical and horizontal components of the pendulum's displacement.
A sealed vertical cylinder of radius R and height h = 0.542 m is initially filled halfway with water, and the upper half is filled with air. By what distance is the depth of the water lowered
A bird sits on a high-voltage power line with its feet 4.6 cm apart. What is the potential difference between the bird's feet
A 12-kg box is free from the top of an incline that is 5.00m long and makes an angle of 40 degrees to the horizontal. A 60-N friction force impedes the motion of the box.
use the biot savart to compute the magnetic field at the center of a matalic ring. the ring has a radius of 10^-6 m, compute the magnetic field at the center of the ring
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