A certain galvanometer needle deflects 30 degrees when the current through the coil is 6x10^-6 A. What deflection would be produced by the same current if the magnetic field were decreased to 2/3 of it's original value?

Modify the equation fδt=δ (mv) to find the force of friction.

Which is not an example of how an object gains elastic potential energy by stretching? a. jumping on a pogo stick b. pulling on a rubber band c. jumping on a trampoline

Suppose that 27 j of work is needed to stretch a spring from its natural length of 6 m to a length of 9 m. (a) how much work is needed to stretch the spring from 12 m to 14 m? j (b) how far beyond its natural length will a force of 78 n keep the spring stretched?