Physics, 15.12.2020 01:00 brendaandrade1889
1) A 25 kg chair initially at rest on a horizontal floor requires a 165 N horizontal force to set it in motion. Once
the chair is in motion, a 127 N horizontal force keeps it moving at a constant velocity. What are the coefficients
of kinetic friction between the chair and the floor?
Answers: 3
Physics, 21.06.2019 13:30
Determine the expected diffraction angle for the first-order reflection from the (310) set of planes for bcc chromium when monochromatic radiation of wavelength 0.0735 nm is used. the atomic radius for cr is 0.1249 nm.
Answers: 3
Physics, 22.06.2019 00:50
Part a constants huck finn walks at a speed of 0.60 m/s across his raft (that is, he walks perpendicular to the raft's motion what is huck's velocity (speed and direction) relative to the river bank? express your answer to three significant figures and include the appropriate units. relative to the shore)
Answers: 3
Physics, 22.06.2019 21:10
Two masses are connected by a rope that hangs over a pulley as shown below. the pulley is a uniform cylinder of radius ν
=0.381meters and mass ν=3.1νν. initially ν"is on the ground and ν#rests 2.5 meters above the ground. if the system is released, use conservation of energy to determine the speed of ν#just before it strikes the ground. assume the pulley bearing is frictionless.
Answers: 2
1) A 25 kg chair initially at rest on a horizontal floor requires a 165 N horizontal force to set it...
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