a 50-kg stunt diver is falling at a speed of 20 m/s. when she is stopped by sinking into a cushion that exerts an average force of 500 n on her. how much time did it take her to stop moving once she hit the cushion?

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?

Lightning is an example of what phenomenon? a release of a large amount of energyan absorption of a large amount of energya natural electric circuita natural electric current

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) =_