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Astone dropped into a well is heard to strike the water after 8seconds. find the depth of the well if the velocity of sound is 350m/s
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Aperson walks first at a constant speed of 4.89 m/s along a straight line from point a to point b and then back along the line from b to a at a constant speed of 2.95 m/s. what is the average speed over the entire trip?
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Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above
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You can watch static electricity in action by rubbing an inflated balloon against your hair. your hair will actually stand on its end! it does this because each hair becomes charged, and they all repel one another.
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A helicopter rotor blade is 3.40m long from the central shaft to the rotor tip. When rotating at 550...
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