The current entering the positive terminal of a device is (t)=3e-2tma and the voltage across the device is v(t)= 10di/dt v.
(a) find the charge delivered to the device between t=0 and t=2 s.
(b) calculate the power absorbed.
(c) determine the energy absorbed in 3 s.

How does the image distance (di) of a convex lens compare with the image distance of a concave lens? a. the image distance of the convex lens is positive, and that of the concave lens is negative. b. both are negative for a virtual image. c. both are positive for a virtual image d. the image distance of the convex lens is negative, and that of the concave lens is positive.

Around faucet handle is part of a(n) a. lever b. screw c. inclined plane d. wheel and axle

You have a resistor and a capacitor of unknown values. first, you charge the capacitor and discharge it through the resistor. by monitoring the capacitor voltage on an oscilloscope, you see that the voltage decays to half its initial value in 2.70 miss . you then use the resistor and capacitor to make a low-pass filter. what is the crossover frequency fc?