1. The record for the fastest marathon run is 26.164 miles in 2.08 hours. If the
ID: 2015024 • Letter: 1
Question
1. The record for the fastest marathon run is 26.164 miles in 2.08 hours. If the runner were a progressive wave, how quickly would he be traveling in m/s?2. You have been asked to help in the design of a new power generator which harnesses the power of progressive waves traveling into shore. The power generator has to be located in shallow water right at the coastline, and the engineers have informed you that the machine will only operate at peak capacity when the incoming wave speeds are 6.5m/s. How deep do you dredge to ensure that the waves coming in from the open ocean will keep the power generator working at peak capacity? Which wavelengths will diminish the power generator's efficiency?
3. On 11 March 2011, a 9.0 magnitude earthquake occured in the Pacific Ocean, centered 99 kilometers SE from Kesennuma, Japan. Assuming that the water depth above the earthquake epicenter was 2200 meters, how much time did the residents of Kesennuma (and nearby coastal villages) have to get to higher ground before the Tsunami hit the coast?
4. The Earth's orbit around the sun is not a perfect circle; it is, in fact, elliptical. In January, the Earth is 147 million kiometers from the Sun. In July, the Earth is 152 kilometers from the Sun. If the tide-generating force from the Sun is F(sun)=1/r^2, how do you think the amplitude of the spring tides in winter would compare with those of the spring tides in the summer (assuming northern hemisphere seasonality)?
Explanation / Answer
1. Given Distance covered ,s = 26.164 miles = 42 106.876 416 m Time taken , t = 2.08 hrs = 7488 s Speed of the runner , v = distance travelled / time taken = (42 106.876 416 m) / (7488 s) v = 5.62 m/s *Post only question for single post*Related Questions
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