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When it rains, water vapor in the air condenses into liquid water, and energy is released.
(a) How much energy is released when 0.0429 m (1.69 inch) of rain falls over an area of 2.59×106 m2 (one square mile)?
(b) If the average energy needed to heat one home for a year is 1.50×1011 J, how many homes could be heated for a year with the energy determined in part (a)?
A string is stretched between fixed supports separated by 86.5 m. It is observed to have resonant frequencies of 359.000 and 430.800 Hz, What is the wave speed for this string
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State your answer in terms of and Use three significant figures in the numerical coefficient.
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Two particles are fixed on an x axis. Particle 1 of charge 51.50 μC is located at x = -33.2 cm; particle 2 of charge Q is located at x = 10.10 cm. Particle 3 of charge magnitude 37.7 μC is released from rest on the y axis at y = 11.30 cm.
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