Which planet has the highest average surface temperature, and why?
A) Mars, because of its red color
B) Mercury, because of its dense carbon dioxide atmosphere
C) Venus, because of its dense carbon dioxide atmosphere
D) Jupiter, because it is so big
E) Mercury, because it is closest to the Sun
C
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A coil lies flat on a level table top in a region where the magnetic field vector points straight up. The magnetic field suddenly grows stronger
When viewed from above, what is the direction of the induced current in this coil as the field increases? A) counterclockwise B) clockwise C) clockwise initially, then counterclockwise before stopping D) counterclockwise initially, then clockwise before stopping E) There is no induced current in this coil.
A child on a skateboard is moving at a speed of 2 m/s. After a force acts on the child, her speed is 3 m/s. What can you say about the work done by the external force on the child?
a) positive work was done b) negative work was done c) zero work was done
Two harmonic waves are described by 
From the choices given, determine the smallest positive value of x (in cm) corresponding to a node of the resultant standing wave.
A. 3 B. 0.25 C. 0 D. 6 E. 1.5
A 60.0-Hz AC generator with a peak voltage of 110 V drives a series RC circuit with R = 10.0 ? and C = 300 ?F. The peak current in the circuit is
a. 8.24 A. b. 8.84 A. c. 11.0 A. d. 12.4 A. e. 23.5 A.