Energy and Mass: A person with an initial mass of 70 kg climbs a stairway and thereby rises 6.0 m in elevation. By how much does his mass increase by virtue of his increased potential energy? (c = 3.0 × 108 m/s)
Fill in the blank(s) with the appropriate word(s).
4.6 × 10-14 kg
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Identify a true statement about the cosmic microwave background
A) It is blackbody radiation with an apparent temperature of 2.725 ± 0.002 K. B) It is radiation present in the ultraviolet spectrum. C) It is gamma radiation with an apparent temperature of 5.755 ± 0.005K. D) It is radiation that was present before the big bang.
The most striking valley in the solar system is:
A) the Grand Canyon in Arizona. B) Gwenivere on Venus. C) the Discovery Scarp of Mercury. D) Valles Marineris on Mars. E) Valhalla on Callisto.
Reflection, refraction, and the formation of images by mirrors and lenses has been successful described by the
A) wave model of light. B) ray model of light. C) particle model of light. D) electro model of light. E) none of the given answers
In Part A, you found that Planet Z should not have polar ice caps or liquid water. What single change to Planet Z's characteristics would allow it to have these things?
a. a larger size b. a larger axis tilt c. a greater distance from its star d. a smaller size