You discover a new star that is 352,800 AU away. What is the distance in light years?
a. 5.6 ly
b. 2.3 ly
c. 63 ly
d. 3.53 ly
e. 2.22 x 10^2 ly
a
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Power is defined as the energy expended per unit of time. When translated to electrical terms, power is equal to
A) current multiplied by resistance. B) current multiplied by voltage. C) current divided by time. D) voltage divided by time. E) none of the above
Between us and the Galactic center, the Milky Way has a mass of
A) several hundred thousand suns. B) one to two million suns. C) 250 million suns. D) 100 billion suns. E) over a trillion suns.
State the First Law of Thermodynamics
What will be an ideal response?
The IMAGE of a plane mirror (of a real object) has the following characteristics:
A) virtual, inverted, and magnification > 1 B) virtual, erect, and magnification = 1 C) real, erect, and magnification = 1 D) real, inverted, and magnification < 1