Phonograph turn-table rotating at revolutions
A phonograph turn-table rotating at 0.75 revolutions per second slows down having constant angular acceleration and stops in 30 seconds. Determine the magnitude of the angular acceleration in rad/s^2?
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Determine how long would it take a radio message to travel from Earth to the astronaut on the Moon when the astronaut is 376,300 km away? Employ the approximate speed of light as 3.00 x 108 m/s.
A light bulb at art museum has expected life of 300 hours and standard deviation of 3 hours. Employ Chebychev's Inequality to estimate the probability that one of these light bulbs will last between 280 and 320 hours of use.
2 cars leave intersection at 2pm, one traveling at 50mph and other at 30mph. Compute distance between 2 cars at 4pm to nearest hundredth of mile.
When thermal equilibrium is reached all of the ice would have melted, and the temperature of the mixture will be somewhere between 20.0 ºC and 0 ºC.
Suppose you are asked to prepare a buffer solution of pH 6.5 which is having the buffer capacity of 0.1 using NaH2PO4 (acid) and Na2HPO4 (salt).
A company owns four copiers. The probability that on the given day any one copier will break down is 0.64. Determine the probability that at least two copiers will break down on given day?
There are presently 50 million cars in the certain country, decreasing by 1.8% annually. How many years will it take for the country to have 27 million cars?
Determine the maximum value the coefficient of kinetic friction among the bookcase and the floor can encompass when the bookcase is not to tip over while being pushed?
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