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10 Nov 2019
Some of consequences of the catastrophic e ects of Hurricane Katrina can be under-stood from simple principles of physics. Consider the problem of removing the water that poured into New Orleans in the wake of Katrina: Estimate the total volume of water that had to be pumped out of New Orleans. Assuming there was 10 MW of pumping capacity, how long would it take to drain the city? Some hints: recall from your previous physics life that the energy needed to pump or "lift" a mass m of anything to a height h above the surface of the earth is mgh where g is the acceleration due to gravity at the earth's surface. Power, measured in watts (W) or megawatts (MW: 1 MW = 106 joules/sec), is the rate at which energy is expended in. say. pumping water up and out of New Orleans. 1 joule is the energy it takes to lift a 1 kg mass approximately 0.1 m.. In the case of pumping out New Orleans, you can assume that the height needed to be pumped to get over the dikes is h = 5 m. This is not the same as the depth of water to be pumped. **Please Explain in Details**
Some of consequences of the catastrophic e ects of Hurricane Katrina can be under-stood from simple principles of physics. Consider the problem of removing the water that poured into New Orleans in the wake of Katrina: Estimate the total volume of water that had to be pumped out of New Orleans. Assuming there was 10 MW of pumping capacity, how long would it take to drain the city? Some hints: recall from your previous physics life that the energy needed to pump or "lift" a mass m of anything to a height h above the surface of the earth is mgh where g is the acceleration due to gravity at the earth's surface. Power, measured in watts (W) or megawatts (MW: 1 MW = 106 joules/sec), is the rate at which energy is expended in. say. pumping water up and out of New Orleans. 1 joule is the energy it takes to lift a 1 kg mass approximately 0.1 m.. In the case of pumping out New Orleans, you can assume that the height needed to be pumped to get over the dikes is h = 5 m. This is not the same as the depth of water to be pumped. **Please Explain in Details**
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