What are gravitational waves?
A) a type of energy that is different from light and that has been detected from sources such as merging neutron stars and black holes
B) a form of light with higher energy than gamma rays
C) a form of light with lower energy than radio waves
D) the name we give to electromagnetic waves that come from astronomical objects that have gravity
A) a type of energy that is different from light and that has been detected from sources such as merging neutron stars and black holes
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If a foreign atom is more than _____________% larger than its host, it normally does not form a continuous substitutional solid solution.
Fill in the blank(s) with the appropriate word(s).
Thin Lenses: A wrench is placed at 30 cm in front of a diverging lens with a focal length of magnitude 10 cm. What is the magnification of the wrench?
A. 0.25 B. -0.25 C. 0.67 D. -0.67 E. 4.0
Which of the following would NOT cause the gravitational force on an object near Earth's surface to increase?
A. an ore deposit just under the surface B. a lower elevation C. an increase in its mass D. a horizontal velocity
Which one of the following IS NOT a characteristic of terrestrial planets?
a. low average density b. orbits inside the asteroids c. craters in old surfaces d. small diameters e. very few satellites