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A 45.0 kg girl is standing on a 136 kgplank. The plank, originally at rest, is free to slide on a frozenlake, which is a flat, frictionless surface. The girl begins towalk along the plank at a constant velocity of 1.43 m/s relative to the plank.
(a) What is her velocity relative to thesurface of ice?
m/s
(b) What is the velocity of the plank relative to the surface ofice?
What is the maxium power that can be supplied by the outlets without blowing the fuse? How many 1,200 W appliances can be plugged into thesockets without blowing the fuse?
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Gas flows from a reservoir at 2000 psi pressure into a well at 1 atm pressure, what is the actual volumetric flow in the well
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The collar A slides on the vertical bar. At the instant shown, its coordinates are x=0.9 m, y=0.6m, and its velocity and acceleration are \(v=4j m/s\) and \(a=-9.81j m/s^2\) . Determine the velocity and acceleration of collar A in polar coordinates.
A long, straight, copper wire with a circular cross-sectionalarea of 2.1mm2 carries a current of 16 A. Theresistivity of the material is 2.0 X 10-8 O m. What is the uniform electric field in the material
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