What will happen to the magnetic lines of force when the north poles of two magnets are placed next to each other?

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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) =_

An object dropped from cliff falls with a constant acceleration of 10 metre per second square find its speed of two seconds after it was dropped