How many revolutions will wheel make in hour
If wheels (comprising tire) of truck are 15 inches in radius, then how many revolutions will wheel make in hour if truck travels at steady speed of 50 miles per hour? Determine to nearest 10 revolutions per hour.
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Grapes oscillate up and down with the period of 0.39 s, and spring in scale has the force constant of 620 N/m. (i) Determine mass of grapes? (ii) Find weight of the grapes?
The boat travels 50 miles downstream in same time that it takes to go 30 miles upstream. Speed of boat in still water is constant 20 miles per hour. The speed of stream in mph is?
Probe will shut down when wattage goes below 35 watts. Correct to nearest whole day, how many days after launch will probe shut down?
Setting up her transit again, she discovers that her line of sight, CB, to tower is 81 degrees. Correct to nearest whole foot, how far is point C from tower?
RRR discovers that demand for its rubies is presently 20 rubies per week and is decreasing at the rate of one ruby per week. How fast is price changing?
The rectangular piece of cardboard, whose area is 216 square centimeters, is made into the cylindrical tube by joining together 2 sides of rectangle.
Suppose that is costs Microsoft approximately c(x) = 62500 + 550x + 0.01x^2 dollars to produce x Xbox 360s in a day. How many x boxes must be produced to minimize average cost?
The certain radio isotope has the half life of 1650 years. How many years would be needed for the given amount of isotope to decay to 65% of that amount?
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