A pole-vaulter is nearly motionless as he clears the bar, set 4.2m above the ground. He then falls onto a thick pad. The top of the pad is 80 cm above the ground, and it compresses by 50cm as he comes to rest. What is his acceleration as he comes to rest on the pad?
Answers: 1
Physics, 22.06.2019 15:10
Auniform crate c with mass mc is being transported to the left by a forklift with a constant speed v1. what is the magnitude of the angular momentum of the crate about point a, that is, the point of contact between the front tire of the forklift and the ground
Answers: 3
Physics, 22.06.2019 15:20
Arigid tank is divided into two equal parts by a partition. one part of the tank contains 3 kg of compressed liquid water at 400 kpa and 60°c while the other part is evacuated. the partition is now removed, and the water expands to fill the entire tank. determine the entropy change of water during this process, if the final pressure in the tank is 40 kpa. use steam tables.
Answers: 3
Physics, 23.06.2019 00:00
Boiling water is an example of physical change. true or false
Answers: 2
A pole-vaulter is nearly motionless as he clears the bar, set 4.2m above the ground. He then falls o...
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