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Chinook salmon are able to move through water especially fast by jumping out of the water periodically. This behavior is called porpoising. Suppose a salmon swimming in still water jumps out of the water with velocity 6.59 m/s at 41.7° above the horizontal, sails through the air a distance L before returning to the water, and then swims the same distance L underwater in a straight, horizontal line with velocity 3.61 m/s before jumping out again.
a) Determine the average velocity of the fish for the entire process of jumping and swimming underwater.m/sb) Consider the time interval required to travel the entire distance of 2L. By what percentage is this time interval reduced by the jumping/swimming process compared with simply swimming underwater at 3.61 m/s?%
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If we make the approximation that the Earth's atmosphere is isothermal, with T=290K, what is the mass of the Earth's atmosphere. What is the ratio of the mass of Earth's atmosphere to the total mass of the Earth
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