Two balls, P and Q, are dropped simultaneously from the same height Ball P has TWICE the mass of ball Q. Ignore the effects of air friction.
Just before the balls hit the ground, the kinetic energy of ball P is x. The
kinetic energy of ball Q, in terms of x, will be ...
a.1/4
b.1/2x
c. x
d.2x
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Apulley with mass mp and a radius rp is attached to the ceiling, in a gravity field of 9.81 m/s2 and rotates with no friction about its pivot.

Which body part transports oxygen removes waste materials in carries nutrients to the body as part of the circulatory system

In the circuit, the switch s has been open for a long time and r = 125 kohm. it is then suddenly closed. (a) determine the time constant before the switch is closed. s (b) determine the time constant after the switch is closed. _ s (c) let the switch be closed at t = 0. find the current in the switch as a function of time. (use t for time. express your answer in milliamps and seconds.) i(t) =_