The__________is the fate of the Universe if dark energy increases with time and galaxies, stars, and even atoms are eventually pulled apart by the accelerating expansion of the Universe
A) big bang
B) big dipper
C) big collision
D) big rip
D
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The webpage shown is an example of ______ content.
A. animated B. scripted C. dynamically generated D. static
A refrigerator absorbs energy of magnitude |QC | as heat from a low temperature reservoir and transfers energy of magnitude |QH| as heat to a high temperature reservoir. Work W is done on the working substance. The coefficient of performance is given by:
A. |QC |/W B. |QH|/W C. (|QC | + |QH|)/W D. W/|QC | E. W/|QH|
The basic difference between the special and general theories of relativity is that
A) the first deals with electricity and the second with magnetism. B) the first deals with nonaccelerated observers and the second deals with accelerated observers. C) the first assumes that the observers are at rest and the second allows the observers to move. D) the first deals only with accelerated observers and the second deals with nonaccelerated observers. E) actually there is no important difference between them.
A concave mirror will produce
a. only inverted images. b. real or virtual images. c. only virtual images. d. only real images.