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# Solved: Some electric-power companies use water to store

ISBN: 9780130606204 3

## Solution for problem 88GP Chapter 6

Physics: Principles with Applications | 6th Edition

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Problem 88GP

Some electric-power companies use water to store energy. Water is pumped by reversible turbine pumps from a low to a high reservoir. To store the energy produced in 1.0 hour by a 120-MW (120 × 106W) electric-power plant, how many cubic meters of water will have to be pumped from the lower to the upper reservoir? Assume the upper reservoir is 520 m above the lower and we can neglect the small change in depths within each. Water has a mass of 1000 kg for every 1.0 m3.

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Thursday, April 10, 2014 Polarization Two possible polarizations E B E B k k 2 Polarizer (3)  The components of the unpolarized light that have the same polarization as the polarizer are transmitted but those with polarization perpendicular to the...

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