The distance traveled by an automobile moving at a constant velocity is
a. directly proportional to the time.
b. directly proportional to the time squared.
c. inversely proportional to the time squared.
d. inversely proportional to the time.
e. none of these
a
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Suppose you want to observe and study the radiation from gas inside an interstellar bubble created by a supernova. Which of the following observatories will be most useful?
A) the Chandra X-ray Observatory B) the Keck I telescope on the summit of Mauna Kea C) the Hubble Space Telescope D) the SOFIA airborne infrared observatory
Everyone is very happy with returnable containers in states with container recycling laws
What will be an ideal response?
What is the least value for an index of refraction?
A. 0 B. 0.5 C. 1 D. just less than 1 E. (1/2)1/2