What are magnetic forces produced by?

Which of the following represents an upright image? a. -do b. +m c. -m d. +do

Which lists the pairs of plates in order from least to greatest in terms of the work done to move the electron?

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) =_