At the bottom of a mine shaft, the air
pressure is 138,000 Pa. How deep is
the mine?
(U...
Answers: 2
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The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force
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Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?
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Which of the following is not a transverse wave? a) soundb) lightc) radiod) all of thesee) none of these
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Simon is writing a story about an astronaut whose spacecraft has been boarded by space pirates. the astronaut has her lucky penny in her hand behind her back as the space pirates break into the control room. she has just locked the controls so that the ship is accelerating in the direction of the control room’s ceiling. simon wants the astronaut to use the penny to hit a button on the control panel to turn off the lights and escape. the button is located a short distance behind and below the astronaut’s hands. how should simon use the theory of relativity to describe what the astronaut must do in order to hit the button?
Answers: 1
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