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A 0.004-kg bullet is fired into a 0.200-kg block of wood at rest on a horizontal surface. After impact, the block with the embedded bullet slides 8.00 m before coming to rest. If the coefficient of friction is 0.400, what is the speed of the bullet before impact?
A bullet is fired through a board, 14 cm thick, with a line of motion perpendicular to the face of the board. If it enters with a speed of 450 m/s, what is the bullets acceleration
A parallel-plate capacitor with circular plates of radius R is being charged. What is the radius R for the circular plate
A solar eclipse is projected through a pin- hole of diameter 0.247mmand strikes a screen 3.12 m away. What is the radius of the first diffraction minimum
A golf gall is dropped from a height of h1 = 3.45 m. After it bounces it only reaches h2 = 2.23 m. How much energy did the ball transfer to the environment during the bounce in Joules
Five grams of nitrogen gas at an initial pressure of 3.0 atm and at 20? C undergo an isobaric expansion until the volume has tripled. What is the gas volume after the expansion
A child pulls an imaginary friend in a wagon at constant speed for 10m with a force of 16N. how much work does the child do
2.1 m length of straight wire carries a current of 30 A in a uniform magnetic field of 55 mT whose direction is at an angle of 37° from the direction of the current
Steel rails 25.0m long are laid end to end with gaps between them to account for thermal expansion. Part A If the track is laid when it's 18 degrees C, how large should the gaps be to allow temperatures up to 39 degrees C?
During a circus performance, a 70.3-kg human cannonball is shot out of an 15.4-m-long cannon. determine the average net force exerted on him in the barrel of the cannon
A 75 kg horizintal plank is suppirted at each end. a 126kg giant panda is resting a quarter of tge way from the left end. what is the verticle force being exerted on the left support?
A hollow spherical shell with mass 1.80kg rolls without slipping down a slope that makes an angle of 40.0? with the horizontal. Find the magnitude of the frictional force acting on the spherical shell
Oppositely charged parallel plates are separated by 4.52 mm. A potential difference of 600 V exists between the plates. (a) What is the magnitude of the electric field between the plates?
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