What is the velocity of a quarter dropped from a tower after 10 seconds? Use formula: Vf = a x t

When you turn on a battery-operated device, an electrical circuit is

Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.

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) =_