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A man pulls a 53.0 kg box horizontally from rest while exerting a constant horizontal force, displacing the box 3.20 meters in 2.00 seconds. Find the force the man exerts on the box.
A rifle is aimed horizontally at a target 50.0 m away, What was the bullet's flight time and What was the bullet's speed as it left the barrel
a. aingly-ionized lithium has a nucleus of charge 3e and two electrons. use the variational principle to estimate the
A meterstick moves past you at great speed. Its motion relative to you is parallel to its long axis. at what speed is the meterstick moving relative to you
Two equal conducting spheres are separated by a fixed center to center distance of 43.0 centimeter and have different charges. Find the initial charge on the sphere which carried a positive charge
Adolf and Ed are wearing harnesses and are hanging from theceiling by means of ropes attached to them. To what height above his starting point does Edrise
A flywheel rotates at 7200 rev/min when the power is suddenly cut off. How many revolutions does the flywheel makes before coming to rest
A child applies an 20.5 N force tangentially to the edge of the merry-go-round for 25.0s. If the merry-go-round is initially at rest, What is the average power supplied by the child
A 2000-kg car accelerates uniformly from rest to 120 km/hr in 10 seconds, then maintains constant speed. What is the linear acceleration of the car
A model rocket blasts off from the ground, rising straight upward with a constant acceleration that has a magnitude of 88.7 m/s2 for 1.70 seconds, at which point its fuel abruptly runs out. Air resistance has no effect on its flight. What maximum alt..
A system consists of two particles. At = 0 one particle is at the origin; the other, which has a mass of 0.50 , is on the -axis at = 6.0. At = 0 the center of mass of the system is on the -axis at = 2.4. The velocity of the center of mass is given..
Consider resistors R1 and R2 connected in series E R1 R2 and in parallel E R1 R2 to a source of emf E that has no internal resistance. How does the power dissipated by the resistors
q1. in brief explain the changes that the sun will go through after it exhausts its core hydrogen. be sure to describe
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