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A 0.120-kg, 50.0-cm-long uniform bar has a small 0.055-kg mass glued to its left end and a small 0.110-kg mass glued to the other end. The two small masses can each be treated as point masses. You want to balance this system horizontally on a fulcrum placed just under its center of gravity. How far from the left end should the fulcrum be placed?
Two protons are released from rest when they are 7.00mm apart. Calculate maximum acceleration
A major-league pitcher can throw a baseball in excess of 44.6 m/s. If a ball is thrown horizontally at this speed, how much will it drop by the time it reaches catcher who is 18m away from the point of release.
A passenger train is travelling at 32 m/s when the engineer sees a freight train 384 m ahead of his train travelling in the same direction on the same track. The freight train is moving at a speed of 5.7 m/s.
American football uses a field that is 100.0 yd long, whereas a soccer field is 100.0 m long. Which field is longer, and by how much
A net is positioned a horizontal distance of 52.0 m from the cannon. Explain at what height above the cannon should the net be placed in order to catch the daredevil?
A plank 2.00 cm thick and 16.9 cm wide is firmly attached to the railing of a ship by clamps so that the rest of the board extends 2.00 m horizontally over the sea below, find the shear modulus of the wood
A particle of rest energy mc^2 is moving with speed v in the positive x direction. The particle decays into two particles, each of rest energy 140 MeV. Find the rest energy of the original particle
By how much does the ball clear the net. How far below top surface would the medallion appear if the observer (not wearing goggles) and the block were under water.
If the speed of a particle is increased by a factor of 10, by what factor is its momentum changed, By what factor is its kinetic energy changed
A 1200 crate slides 15 down a ramp that makes an angle of 30 with the horizontal. If crate slides at a constant speed, how much thermal energy is created?
A 55kg pole vaulter running at 10m/s vaults over the bar. If the vaulter's horizontal component of velocity over the bar is 1.10m/s and air resistance is disregarded, how high was jump.
q1. a rotating flywheel that is brought up at its maximum speed 3000 rpm stores how much energy? the flywheel is a
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