Acoil of conducting wire carries a current i. in a time interval of δt = 0.520 s, the current goes from i1 = 3.20 a to i2 = 1.90 a. the average emf induced in the coil is e m f = 14.0 mv. assuming the current does not change direction, calculate the coil's inductance (in mh).

The 10-kg double wheel with radius of gyration of 125mm about o is connected to the spring of stiffness k = 600 n/m by a cord which is wrapped securely around the inner hub. if the wheel is released from rest on the incline with the spring stretched 225 mm, calculate the maximum velocity v of its center o during the ensuing motion. the wheel rolls without slipping

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) =_

The dominant wavelength of energy emitted by the sun is