Power: A kilowatt-hour is equivalent to
A. 1000 W.
B. 3600 J.
C. 3,600,000 J/s.
D. 3,600,000 J.
E. 3600 J/s
Answer: D
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An engineer uses a river (minimum temperature 
to cool his electrical plant which heats water with a boiler operating at 
His boiler uses 420 kW of energy to heat water to steam. What is the maximum power output under ideal circumstances?
A. 230 kW B. 186 kW C. 330 kW D. 416 kW
One of Galileo's strongest objections against the Earth-centered universe came from his observation of
a) The phases of Venus b) Precession of the Spin axis of our planet c) eclipse of the Sun d) the phases of the Moon E) the stars in the Milky Way
Assuming the Earth's orbital angular momentum is quantized, estimate its angular momentum quantum number (l)
A) 3 × 1074 B) 3 × 1044 C) 3 × 1024 D) 3 × 10-34 E) 3 × 10-44
Our current calendar is the______________ calendar
Fill in the blank(s) with correct word