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A styrofoam cooler (K = .030 W/mo C) has an average surface area of 0.338 m2 and an average thickness of 2.8 cm. There are 3.10 kg of ice at 0oC in the cooler and the outside temperature is 20.0oC. The heat of fusion for water is 3.33E+5 J/kg and the heat of vaporization for water is 2.26E+6 J/kg.
How much heat is required to melt the ice in the cooler?
About how much time will it take to melt the ice in the cooler?
A U-shaped tube is partly filled with water and partly filled with a liquid that does not mix with water. what is the density of the liquid
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Think about a communications satellite in geosynchronous orbit. It sits approximately 35,786 kilo meter above the Earth's equator.
You need a 2m long wire to carry a current of 10 mA, but you can find only a 1m copper wire with resistance 1 milli-ohm and a 1m wire made of some other metal. this second wire has the same length and diameter as the first wire but a resistance of..
Two aluminum wires have the same resistance. If one has twice the length of the other, what is the ratio of the diameter of the longer wire to the diameter of the shorter wire
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A 1.90-kg object attached to a spring moves without friction (b = 0) and is driven by an external force given by the expression F = 3.20sin(2?t), Find the resonance angular frequency of the system
Your friend, who is exactly the same age as you, travels at a speed of 0.9990c to a star 25 light-years away. How long does she measure for the time she is away
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