Determine the reaction force
A man drops a baseball off of the top of the Empire State Building. If the action force is the pull of the Earth on the ball, then what is the reaction force?
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A 14 g bullet traveling at 248 m/s is fired into a 0.489 kg wooden block anchored to a 100 N/m spring. How far is the spring compressed to the nearest thousandth of a meter?
A horizontal uniform bar of mass 2.6 and length 3.0 is hung horizontally on two vertical strings. String 1 is attached to the end of the bar, and string 2 is attached a distance 0.7 from the other end. A monkey of mass 1.3 walks from one end of th
What is the electromagnetic spectrum? Give examples of each kind of wave and relate each example to its relative position in the spectrum.
A 240 , 50.0-cm-diameter turntable rotates on frictionless bearings at 57.0 . A 22.0 block sits at the center of the turntable. A compressed spring shoots the block radically outward along a frictionless groove in the surface of the turntable. Wh
Two horizontal forces, 249 N and 165 N, are exerted in opposite directions on a crate. What is the net horizontal force on the crate? Be sure to indicate the direction of the net force. (Assume that the 249 N force is in the positive direction.)
The entering car maintains its acceleration. How much time is required for the entering car to catch up with the other car?
(a) How long does it take each ball to reach the floor after it rolls off the edge? (b) How far does each ball travel horizontally before hitting the floor?
What is the time necessary for crossing if the hunter wishes to move neither upstream nor downstream whilst crossing the river?
If the collision is completely inelastic, find v, the speed of the two boxes after the collision.
A horizontal desk surface measures 2.08 m x 1.73 m. If Earth's magnetic field has magnitude 0.495 mT and is directed 64.8° below the horizontal, what is the magnetic flux through the desk surface?
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