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A group of explorers in Antarctica can obtain water only by melting ice. They wish to make 4 cups of coffee (400. grams of boiling water each) in 4.5 minutes from snow with an initial temperature of -40. degrees F. Determine:
a) the amount of heat required
b) the amount of power required
c) the change in entropy of the ice -> coffee process
d) the volume of ice required
What is the energy density in the electric field at the surface of a 2.90-cm-diameter sphere charged to a potential of 1000V
The below cylinder has a 3.00 inch bore, 1.00 inch rod and a 40.00 inch stroke, what force will the cylinder rod exert after the cylinder extends
A playground merry-go-round of radius R = 2 m has a moment of inertia I = 275 kg•m2 and is rotating at 14 rev/min about a frictionless vertical axle.
Find the radius of the largest water drop
A 57 kg student sits on a chair which is solely supported by a solid 1/2 meter long steel rod 1cm in diameter. To the nearest micron (millionth of a meter) what is the change in length of the rod produced by the student's weight.
Chef at the infamous Fattening Tower of Pizza tosses the spinning disk of uncooked pizza dough into the air. The disk's diameter increases during the flight, whereas its rotational speed.
A 21 g bullet travelling at 255 m/s is fired into a 0.452 kg wooden block anchored to a 100 N/m spring. How far is spring compressed to the nearest thousandth of a meter.
Both car A and car B leave school at the same time, traveling in the same direction. Car A travels at a constant speed of 71 km/h while car B travels at a constant speed of 90 km/h. how faris car A from school 2.2 h later.
As expected, the predictions of Coulomb's law are well confirmed. You find that the forces are: repulsive? or attractive? 2. and that the magnitude of each force is?
As a result of the distribution illustrate what is scotts basis in the a/r and land, and explain how much gain or loss does he recognize?
A 2.0cm×2.0cm×6.0cm block floats in water with its long axis vertical. The length of the block above water is 1.0cm
At what height above the surface of the earth does the balloon have a velocity of 8.10 m/s.
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