YSOs are in hydrostatic equilibrium
a. True
b. False
Indicate whether the statement is true or false
False
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A series RLC circuit has resistance 200 
inductance 0.200 H, and capacitance 0.500
F If the circuit is at resonance with a 120 V rms source, what is the average power dissipated?
A. 144 W B. 120 W C. 77.0 W D. 72.0 W E. 100 W
What are the appropriate units for the Sun's luminosity?
A) Kilograms B) Joules C) Watts D) Newtons
Aluminum rod #1 is 1.0 m long with cross-section area 2.0 cm2 . Aluminum rod #2 is 2.0 m long with cross-section area 4.0 cm2 . Aluminum rod #3 is 3.0 m long with cross-section area 9.0 cm2 . If each rod has the same temperature difference applied across its ends, which rod has the greatest rate of transfer of energy between its ends?
a. #1 b. #2 c. #3 d. #2 = #3, both greater than #1 e. They each have the same rate.
What is the source of acid rain?
A) Acid rain is from dissolved carbon dioxide. B) All rain is acid rain because rain has a pH is less than 7. C) Rain is normally basic, but depending on the weather it can get slightly acidic. D) All rain is acid rain because rain has a hydronium ion concentration greater than 10-7 M. E) none of the above