You carry a 20 N bag of dog food up a 6.0 m flight of stairs. How much work was done?

Iflow from a warmer object to a cooler object until both objects are the same temperature what am i?

How much work is done lifting a 9.10 kg box straight up onto a shelf that is 1.80 m high?

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) =_