The second law of thermodynamics states that when a process converts energy from one form to another, some energy converts into heat, a less usable form of energy energy can neither be created nor destroyed, but can change from one form to another energy flows through ecosystems without being recycled most energy in ecosystems comes from the sun

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) =_