How what hp moted would be needed
A skier of mass 67 kg is pulled up a slope by a motor-driven cable.
(a) How much work is required to pull him 70 m up a 30° slope (assumed frictionless) at a constant speed of 1.7 m/s?
(b) How what HP moted would be needed.
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A beam of 5 MeV electrons passes through a 300 micro-meter thick silicon detector. Estimate the energy lost by the electrons when crossing 100 micro-meter, 200 micro-meter and the full thickness of the detector.
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Determine the breakdown voltage for an argon filled chamber having electrode separation of 0.3 cm and first Townsend coefficient of 100 cm^-1 at STP. What will be the breakdown voltage if the gas in the chamber is replaced by helium?
(a) How much work is required to pull him 70 m up a 30° slope (assumed frictionless) at a constant speed of 1.7 m/s? (b) How what HP moted would be needed.
A 2.97 kg steel ball strikes a massive wall at 11.7 m/s at an angle of alpha = 67.2° with the plane of the wall. It bounces off with the same speed and angle.If the ball is in contact with the wall for 0.228 s, what is the magnitude of the ave
By how much vertical distance does the ball clear the crossbar?
A tiger leaps horizontally from a 7.7 {rm m}-high rock with a speed of 3.0 {rm m/s}. How far from the base of the rock will she land?
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