College entrance examination follow a normal distribution
Scores on a certain nationwide college entrance examination follow a normal distribution with a mean of 550 and a standard deviation of 100. Find the probability that a student will score over 690. Round your answer to four decimal places.
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A wind farm consisting of a number of windmills, or wind generators, is proposed to produce 25 megawatts (MW) of electrical power. How much wind power needs to be available to produce the rated 25 MW of power?
If 1.50 m^3 of water at 0 degrees Celsius is frozen and cooled to -15 degrees Celsius by being in contact with a great deal of ice at -15 degrees Celsius, what would be the total change in entropy of the process?
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At one instant the outer wall moves at a speed of 3.9 m/s, and an 83 kg person feels a 535 N force pressing against his back. What is the radius of the chamber?
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