Wet cooling towers are the most efficient way to eliminate waste heat
What will be an ideal response?
The wet cooling towers are thermally more efficient than dry cooling towers
because of the energy used in running the fans in dry cooling towers
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What do both latitude on Earth and declination in the sky measure?
What will be an ideal response?
Compared to a sound of 40 decibels, the intensity of a sound of 50 decibels is
A) 10 times as much. B) 100 times as much. C) 1000 times as much. D) 10,000 times as much. E) more than 10,000 times as much.
Objects the size of the one that exploded over Chelyabinsk (Russia), causing significant damage and injuries to more than 1,000 people, probably hit Earth at least
A) once a century. B) once a year. C) once every 500,000 years. D) once every 100 million years.
Work is done on an object to increase its total energy. Which one of the following is true?
A. Both the kinetic energy and potential energy can be larger B. The total work done must be equal to the energy lost to heat and sound C. If the potential energy increases, then the kinetic energy must decrease D. The object must have a larger speed and smaller height above the ground