Find the probablility that
Suppose 4 balls are going to be randomly placed into one of 4 buckets. Find the probablility that:
a. Exactly one bucket is empty
b. No buckets are empty
c. Exactly two buckets are empty
d. Exactly three buckets are empty
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Each ball has a mass of 0.14 g and a charge of magnitude q. The ball are attracted to each other and the threads attached to the balls make an angle of 20 degrees with the vertical. a) the magnitude of the electric force acting on each ball?
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The power required to service a 400kW cooling load. What would be the coefficient of performance if the compressor had and efficiency of 80%.
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