As the sun shines on the ice, 250g of the ice melts and changes into liquid. The amount of energy needed to melt the 250g of ice is 83500J. Determine the specific latent heat of ice.

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) =_