The largest single dish radio telescope is ____
a. suspended on cables in a valley
b. buried deep in a mine underground
c. orbiting in space
d. suspended from balloons in the upper atmosphere
A
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What will be an ideal response?
If the ac peak voltage across a 100-ohm resistor is 120 V, then the average power dissipated by the resistor is
A) 102 W. B) 288 W. C) 72 W. D) 144 W. E) 220 W.
A particle with charge -40.0 nC is on the x axis at the point with coordinate x = 0. A second particle, with charge -20.0 nC, is on the x axis at x = 0.500 m. There is a point between x = 0 and x = 500 mm where the electric field is zero. Is the electric potential zero at this point?
1.No; it is positive. 2.Yes. 3.No; it is negative.
Most of the batholithic-sized plutons found in the continents are composed of
A) obsidian. B) basalt. C) granite. D) sandstone.