given a "black box" with two terminals. You play around with the box for a while and make the following observations:
(i) The output voltage from the box is sinusoidal.
(ii) The peak magnitude of the open-circuit voltage at the terminals is 5 V.
(iii) When you connect a 50 resistor across the terminals, the peak magnitude of thevoltage across the resistor is 2.795 V.
(iv) If you short the terminals, the peak magnitude of the current through the short circuitis 100 mA.
Find the power available from the "black box."