_. 50. how much kinetic energy does 2200kg car have if it is moving at 35m/s? (6.2)
a. 2.6 x 10)
b. 8.5 x 10 )
c. 7.7 x 104j
d. 1.3 x 106]

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) =_