Which of the following scenarios would cause a sound to stop being produced?
a. a molecule moves through its normal position to the opposite side of its normal position.
b. a molecule moves in the same direction as a wave.
c. the vibration results in a molecule moving vertically.
d. the vibration of the point in the medium ends.

The scenario that would cause a sound to stop being produced is when a molecule moves through its normal position to the opposite side of its normal position. The answer is letter A. This is also known as destructive interference.

double the distance = divide strength by 4

so here is the information for current research:

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and here is the information for the technology of geothermal energy:

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-resources of geothermal energy range from the shallow ground to hot water and hot rock found a few miles beneath the earth's surface, and down even deeper to the extremely high temperatures of molten rock called magma

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-a geothermal heat pump system consists of a heat pump, an air delivery system (ductwork), and a heat exchanger-a system of pipes buried in the shallow ground near the building

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