The potential difference between the ends of a resistor is 9 V when a current of 1 A flows through it. What is the value of that resistor?
A) 9 ? s
B) 9 ?/s
C) 9 V?s
D) 9 V/s
E) 9 ?
E
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An object moving i n the +x direction has an acceleration of +2.0 m/s2. This means the object
A) travels 2.0 m in every second. B) is traveling at 2.0 m/s. C) is decreasing its velocity by 2.0 m/s every second. D) is increasing its velocity by 2.0 m/s every second.
The statistical interpretation associated with the wave function originated with
A. Born. B. Bohr. C. Einstein. D. Schrödinger. E. Planck.
Why is the moon Io volcanically active with a hot interior?
A. Io was formed later than the other Galilean satellites, so it hasn't finished cooling yet. B. Io is very close to the Sun. C. Io gets flexed between the changing gravitational pulls of Jupiter and Europa, heating it by friction. D. Radioactive decay of elements in Io's core heat up the rock to molten temperatures.
Suppose that the light from the sun suddenly shut off all over the sun, precisely at noon, as measured by clocks placed near the sun. Viewed from Earth, how would this appear? (HINT: It is about 8 light-minutes to the sun.)
A) Nothing unusual would happen, as viewed from Earth. B) At noon, all sunlight would suddenly cease. C) At about 8 minutes past noon, all sunlight would suddenly cease. D) After about 8 minutes, the sun would turn into Daffy Duck. E) At about 8 minutes past noon a small black spot would appear in the center of the sun, and this black spot would rapidly spread out over the entire sun.