In the above image of the pendulum, If the ball has a mass of 3 kg and is 2.5 m up in the air at point A and only 1.5 m in the air at point C, what is the change in GPE between point A and point C? (there is no friction in this physics land)

An inclined plane wrapped around a metal shaft is a a. lever b. screw c. pulley d. wedge

Explain the comparisons between nature and packingtown that appears on pages 81 and 82 answer

Consider a one meter long horizontal pipe with a constant 100 cm^2 cross sectional area. water flows rightward into the pipe at x = 0 with flow velocity 02m/sec at every point within the pipe intake area. at x=1, the rightward flow rate is 0.192 m/sec. assume the water is a conserved quantity in the pipe, so there must be a leak (a sink) somewhere in the pipe. 1. compute net volumetric flow of the source if the system to be in equilibrium. 2. now assume the pipe in the problem has no leaks. compute the net volumetric rate of change for the system.