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Astone is dropped with no initial velocity from the top of a cliff and hits the ground a time of 3.9 s later. what is the height of the cliff, in units of meters? you may assume that air resistance is negligible. give the answer as a positive number question 15 a figure skater is rotating at a rate of 200 revolutions per minute. what is the angular speed, in units of rad/s? 200 o 20.9 12000 o 3.33
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How many neutrons does plutonium -196 with an atomic number of 78.
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Which of the following is a measure of the amount of light a star directly emits? a. luminosity b. intensity c. wavelength d. brightness
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In forced convection, the fluid is forced to move by external means such as a fan, pump, or the wind...
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