The peak output of a generator is 20. A and 240. V. What average power is provided by the generator?
What will be an ideal response?
2.4 kW
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A significant source of gamma rays is ________.
A. electrons moving in Jupiter's electric field B. a thermonuclear explosion C. a supernova explosion D. halogen lamps E. the collision of two black holes
The inductance of a tuning circuit of an AM radio is 4.00 mH. Find the capacitance of the circuit required for reception at 1200 kHz.
A. 2.10 pF B. 4.40 pF C. 21.2 pF D. 43.4 pF E. 27.6 pF
Fission fragments are
A. harmless particles emitted in radioactivity B. among the most dangerous kind of radiation C. ghost-like particles that pass through the Earth D. the source of most energy in the Sun
Assuming negligible friction, what spring constant would be needed by the spring in a "B-B gun" to fire a 10. gram pellet to a height of 100 meters if the spring is initially compressed 10. cm?
A) 20. N/cm B) 20. N/m C) 200. N/m D) 2.0 × 103 N/cm E) 2.0 × 10-3 N/m