Which of the following worlds have the thinnest lithospheres?
A) Earth and the Moon
B) Venus and the Moon
C) Mercury and Venus
D) Earth and Mars
E) Earth and Venus
E
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Most of the visible light from the Sun originates in the photosphere
a. True b. False Indicate whether the statement is true or false
Graphical Analysis: A child standing on a bridge throws a rock straight down. The rock leaves the child's hand at time t = 0 s. If we take upward as the positive direction, which of the graphs shown below best represents the velocity of the stone as a function of time?
A. 
B. 
C. 
D. 
E. 
A parallel-plate capacitor has a plate separation of 5.0 cm. If the potential difference between the plates is 2000 V, with the top plate at the higher potential, what is the electric field between the plates?
A) 100 N/C upward B) 100 N/C downward C) 4000 N/C downward D) 40000 N/C upward E) 40000 N/C downward
Pumped storage generally will enable a utility to _______
a. increase the efficiency of their electrical generating system b. store energy until the demand is high enough c. raise electrons to higher energy states d. increase their electrical potential energy