The resolving power of a telescope is affected by the property of light called
A. refraction.
B. attenuation.
C. diffraction.
D. reflection.
E. seeing.
Answer: C
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A. It is not subject to any outside forces. B. It must be an artificial satellite. C. There must be a net force acting on it. D. None of these choices is correct.
A nova destroys the star and leaves behind a white dwarf
Indicate whether the statement is true or false
When we see Venus in its full phase, what phase would Earth be in as seen by a hypothetical Venetian?
A) waning crescent B) new C) third quarter D) first quarter E) full
An astronaut floats inside an orbiting space station. Which of the following are true?
A. No forces act on the astronaut. B. The astronaut has no mass. C. The astronaut has no weight.
1.A only 2.B only 3.C only 4.A and B 5.A and C 6.B and C 7.all are true 8.none are true