When looking for the radial velocity changes or "wobbles" detected due to Doppler shifts, which mass combination is most likely to be detected?
A) high mass star, high mass planet
B) high mass star, low mass planet
C) low mass star, high mass planet
D) low mass star, low mass planet
E) a high mass planet; the mass of the star is irrelevant
C
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Room temperature is approximately
A) 68. K. B) 300.°F. C) 300. K. D) 68.°C. E) -68.°F.
About how big is an atom?
a. too small to measure b. about a millionth of a meter across c. about a billionth of a meter across d. about a trillionth of a meter across e. none of the above
Spaceships A and B are moving in the same direction along the same straight line. Spaceship A is moving at 0.800 c relative to a stationary observer, and spaceship B is moving at 0.800 c relative to spaceship A. What does the stationary observer find for the speed of spaceship B?
A. 1.60 c B. 1.28 c C. 1.00 c D. 0.780 c E. 0.980 c
Kinetic Energy: How fast must a 6.0-kg cat run to have a kinetic energy of 150 J?
Fill in the blank(s) with the appropriate word(s).