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Q. A gun shoots bullets that leave the muzzle with a speed of 338 m/s. If a bullet is to hit a target 104-m away at the level of the muzzle, the gun should be aimed at a point above the goal.
How far above the target is this point? (Avoid air resistance.)
What is the speed of the bowl? The speed of sound is 340 meters per second.
Determine the position of the GPS satellite relative to and from the center of the earth and ratio of clock rates on a GPS clock in orbit and one on the surface of the earth.
What is the integral from s to p of B dot dL, where an integral is taken along the dotted path shown, first from point P to point R at (x,y) = (0.707d, 0.707d), and then to point S at (x,y) = (0.6d, 0.6d).
A 12 kg weather rocket generates a thrust of 250 N. The rocket, pointing upward, is clamped to the top of a vertical spring. The bottom of the spring, whose spring constant is 560 N/m, is anchored to the ground. What is the rocket's speed while the s..
Two charges q1 = 1.1 10-8 C and q2 = -4.8q1 are placed 50 cm apart. Find the point along the straight line passing by the two charges at which the electric field is zero, as measured from q1.
You work for a moving company and are given the job of moving two crates (masses are 130kg and 280kg) held together by a rope attached between the two. You pull on a rope attached to the larger crate giving the system the acceleration of 0.29m/s2. Wh..
An ore car of mass 4 000kg rolls downhill on tracks from a mine. At the end of the tracks, 10 m lower in elevation, is a spring with k = 400 000 N/m. How much is spring compressed in stopping the ore car? Ignore friction.
What average force athletes legs apply on a ground
How long does it take for the grinding wheel to stop ? Through how many radians has the wheel turned during the interval found in.
A 95 kg man standing on a surface of negligible friction shoves a 75 g stone lying at his feet, giving it a velocity of 4.0 m/s. What velocity does the man obtain accordingly.
how much time passes before the brick lands on the ground. If the wind speed is 26 mph, find the velocity of the plane in still air.
What is the coefficient of kinetic friction between the table and floor.
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