If you take a photograph of a nearby star and after 6 months take another photograph of the star from a slightly different location in space, you would observe that the:
A) color of the star is red when photographed from a closer distance.
B) color of the star is blue when photographed from a closer distance.
C) star is in exactly the same place in the two photographs.
D) star is not in exactly the same place in the two photographs.
D
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Significant Figures: Add 1299 g and 45.1 kg and express your answer in milligrams (mg) to the correct number of significant figures.
A. 4.64 × 107 mg B. 4.64 × 104 mg C. 4.64 × 105 mg D. 4.64 × 106 mg
The potential outside a uniformly charged sphere is the same as if all the charge were concentrated at its center
Indicate whether the statement is true or false
How might a pulsar appear to an observer?
A) It may appear to flash several times per second or more with near perfect regularity. B) It may slowly get dimmer and brighter with a period ranging from several days to several weeks. C) It may appear to flash at random intervals. D) It may appear to change color very rapidly, from blue to red and back again, with near perfect regularity. E) Its spectrum may alternate between showing blueshifts and redshifts very rapidly with near perfect regularity.
The ____ of an object is a measure of the amount of matter it contains. On the other hand ____ is a measure of the gravitational force on an object
a. weight; mass b. mass; weight c. energy; force d. force; energy e. momentum; energy