Earthquake P-waves
A) travel in straight lines through Earth's core.
B) cannot move through Earth's core.
C) are transverse vibrations similar to sound waves.
D) are longitudinal vibrations similar to sound waves.
Answer: D
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Two objects move toward each other due to gravity. As the objects get closer and closer, the force between them
A) increases. B) decreases. C) remains constant.
A 3.50-kg block is pulled along a moving conveyor belt at a constant speed of 0.500 m/s relative to a stationary observer while the belt moves at a constant speed of 0.200 m/s in the opposite direction. If the coefficient of kinetic friction is 0.400, the magnitude of the mechanical energy dissipated, in J, caused by the force of friction on the block in 8.00 s is
a. 5.6. b. 22.0. c. 32.9. d. 54.8. e. 76.8.
Eras are divided first into smaller time units called ______________
Fill in the blank(s) with correct word
A bimetallic strip is usable as a thermometer because of
a. heat conduction b. heat convection c. heat radiation d. thermal expansion e. none of the above