When cells are submerged in a(n) solution, the salt concentration inside the cells is higher than the salt concentration outside the cells. this causes water to rush into the cells.
a. isotonic
b. hypertonic
c. ionic
d. hypotonic

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) =_