Three resistors are connected in series in a circuit. The resistors A, B, and C have resistances R, 2R, and 3R, respectively. Which resistance dissipates the most power?
1.A
2.B
3.C
4.They all dissipate the same power when in series.
3
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A molecule takes 3.0 seconds to diffuse across a membrane. If the thickness of the membrane is doubled, then how long does it take the molecule to diffuse across the thicker membrane?
A. 30 hours B. 24 hours C. 20 hours D. 18 hours E. 12 hours
A certain gas is compressed adiabatically. The amount of work done on the gas is 800 J. What is the change in the internal (thermal) energy of the gas?
A) 800 J B) -800 J C) 400 J D) 0 J E) More information is needed to answer this question.
When the Sun becomes a white dwarf with a surface temperature similar to its current surface temperature, what will its luminosity be?
What will be an ideal response?
If 
= 5.0, 
= 8.0, and ? = 30°, determine the scalar product of the two vectors shown.
?
?
A. ?35
B. +35
C. ?20
D. +20
E. +40