Which phrase describes velocity? a. a synonym for speed b. a vector quantity c. a quantity with magnitude only d. a quantity with no units

Aria drove to the store, did some shopping, and then came home. during maria's trip, when was her displacement equal to zero?

What was the first instrument to ever record an earthquake?

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) =_