Which one of the following quantities is equivalent to 1 ??
A) 1 V ? A B) 1 J/s C) 1 W/A D) 1 A ? s E) 1 V/A
E
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Determine the magnitude and sense (direction) of the current in the 500-? resistor when I = 30 mA
a.
56 mA left to right
b.
56 mA right to left
c.
48 mA left to right
d.
48 mA right to left
e.
26 mA left to right
A parallel plate capacitor has air in between the plates, which are circular with radius 0.07 m. The separation gap is 0.375 mm. What is the maximum energy that can be stored in this capacitor if air-breakdown is to be avoided? The breakdown threshold field is approximately 
a. 
b. 
c. 
d. 
Which statement best describes what was called the solar neutrino problem?
A) Early experiments designed to detect solar neutrinos found them, but in fewer numbers than had been expected. B) It referred to the fact that neutrinos are extremely difficult to detect. C) Our understanding of fusion in the Sun suggested that neutrinos should be destroyed before they arrive at Earth, yet neutrinos were being detected. D) No one understood how it could be possible for neutrinos to be produced in the Sun.
Which of the following would make finding life in an ocean beneath the surface of Ganymede more difficult than finding life in an ocean beneath the surface of Europa?
A) a thicker ice layer above the ocean B) the presence of high-density forms ice at the bottom of any ocean C) fewer nutrients transported down from the surface D) all of these