Two workmen are stacking heavy cinder blocks from the
Two workmen are stacking heavy cinder blocks from the ground to a raised pallet. If one of them stacks 100 of the blocks in 20 min and the other stacks 100 of them in 30 min, which one has done more work? Which has the greater power output?
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chadwick is pushing a piano across a level floor he piano can slide across the floor without friction if chadwick
the potential for a mass hanging from a spring is vyky22mgy when y0 corresponds to the position of the spring when
find the escape velocity for a partical on a spherical planet of radius r and mass m what is the numerical value for
two trains each having a speed of 30 kmh are headed at each other on the same straight track a bird can fly 60kmh flies
two workmen are stacking heavy cinder blocks from the ground to a raised pallet if one of them stacks 100 of the blocks
the power stroke of the myosin protein on an actin filament that generates tension in a muscle appears to be a 10 nm
a 29-kg toy locomotive is pulling a 17-kg caboose the frictional force of the track on the caboose is 054 n backward
a helicopter is lifting two crates simultaneously one crate with a mass of 160 kg is attached to the helicopter by
a roller coaster car of mass 310 kg including passengers travels around a horizontal curve of radius 35 m its speed is
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