Calculate the force necessary to accelerate
Calculate the force necessary to accelerate a 20 kg, 400mm diameter sphere which is at rest under water at the rate of 5 m/s2 in the horizontal direction. Use ρwater = 1000 kg/m3.
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Mary is in a train traveling at 30m/s. Fred is standing next to the train tracks. The train passes Fred at 30m/s. 2m after the train passes, Fred throws a ball to Mary at 35m/s .
Find the area of the shaded region. The graph depcits IQ scores of adults and those scores are normally distributed with a mean of 100 and a SD of 15. The area of the shaded region is?round to four decimals.
The fibers have an outside diameter of 85 μm and an inside diameter of 42 μm. The average flow through the tubes is 2*106 cm3 in one day and the feed pressure is 3*106 N/m2.
Heat transfer occurs from the steam to its surroundings at a rate of 19.59 Btu/lbm of steam flowing. Neglecting potential energy effects, determine the exit pressure in psia.
Alex and Bob are twins working on a space station located at a fixed position in deep space. Alex undertakes an extended return spaceflight to a distant star, while Bob stays on the station.
Determine the value in Farads and the VAR rating of a 277 V capacitor which, when connected in parallel with the load, will correct the power facto to 0.98 lagging.
Do the sample standard deviation target the value of the population standard deviation? In general do sample SD make good estimators of population SD? Why or why not?
Determine the rate at which energy is removed by heat transfer from the refrigerated space, in kW, and the refrigerator's coefficient of performance.
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