Apuddle of water on the sidewalk evaporates and becomes water vapor. the water vapor travels through air and comes into contact with a cold mirror. what happens next? choose all that apply. a. it becomes a solid b. it becomes a liquid c. the molecules gain energy d. the molecules lose energy

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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) =_

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