In the diagram, q1 = -3.33*10^-9 C and q2 = -5.22*10^-9 C. The electric field at
point P is zero. What is the distance
from P to q2?
91
Р
92
?
0.255 m-
(Remember, E points away from + charges,
and toward - charges.)
(Unit = m)

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) =_