When a gambler shows how many balls he is playing with, he throws the balls vertically upwards so that when one ball reaches the highest point, the next ball is thrown. If he throws 7 balls per second, how high will each ball go?

Asystematic approach to problem solving is called a (an)

Consider a system with two masses that are moving away from each other. why will the kinetic energy differ if the frame of reference is a stationary observer or one of the masses?

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) =_