The optimum angle of tilt (from the horizontal) for a flat plate collector at 35° N latitude for the purpose of space heating is ________
a. 0° b. 25° c. 35° d. 45° e. 75°
d
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A solid object floats in water with three-fourths of its volume beneath the surface. What is the object's density? The density of water is 1000 kg/m3
A) 1333 kg/m3 B) 1000 kg/m3 C) 750 kg/m3 D) 250 kg/m3
The total mechanical energy of a simple harmonic oscillator is
A) zero as it passes the equilibrium point. B) zero when it reaches the maximum displacement. C) a maximum when it passes through the equilibrium point. D) a minimum when it passes through the equilibrium point. E) constant.
What is the maximum number of 100-W lightbulbs you can connect in parallel in a 120-V home circuit without tripping the 20-A circuit breaker?
Helium fusion results in the production of
A) iron. B) nitrogen. C) carbon. D) oxygen. E) hydrogen.