If the Sun were replaced by a one-solar-mass black hole,
A) we would immediately escape into deep space, driven out by its radiation.
B) all terrestrial planets would fall in immediately.
C) our clocks would all stop.
D) we would still orbit it in a period of one year.
E) life here would be unchanged.
D
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In the context of general relativity, time slows down in curved space-time. This is referred to as _____
A) spatial loss B) spatial growth C) time dilation D) time fragmentation
The length of the telescope is 1.60 m, and it has a magnification of 60.0. What is the focal length of the objective lens?
A) 60.0 cm B) 157 cm C) 100 cm D) 128 cm E) 96.0 cm
The figure shows the position of an object as a function of time, with all numbers accurate to two significant figures. Between time and time (a) what is the average speed of the object? (b) what is the average velocity of the object?
What will be an ideal response?
X-rays of fixed wavelength yield a first-order maximum at a grazing angle of
At what angle would one expect to find the corresponding 3rd order maximum?
A. 
B. 
C. 
D. 
E. more information is needed