Asmall ball is attached to one end of a massless, rigid rod. the ball and the rod revolve in a horizontal circle with the other end of the rod at the center. the path of the ball has a constant linear speed. the force exerted by the rod is 0.5 n. the mass of the ball is 3kg. what is the centripetal acceleration of the ball, in m/s2?

From 0 to 5 seconds john pushed a box 5 meters. from 5 to 10 seconds, paul pushed the same box another 5 meters. who did more work? a. john b. paul c. john and paul did the same amount of work.

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length (in m) of a column of water 1.45 km high for a temperature increase of 1.12°c. assume the column is not free to expand sideways. as a model of the ocean, that is a reasonable approximation, as only parts of the ocean very close to

How did the germans define who was jewish?