In a vacuum, which of the following wave travels the fastest? o a. radio ob. all travel the same oc. visible o d. gamma

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?

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) =_

The force needed to overcome static friction is usually less than that needed to overcome kinetic friction.true or false?