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A cube of ice is taken from the freezer at -7.2 ?C and placed in a 115g aluminum calorimeter filled with 318g of water at room temperature of 20.0 ? C. The final situation is observed to be all water at 15.0 ? C. What was the mass of the ice cube?
A typical lightbulb in your house is rated 200 W, which means that the bulb dissipates 200 W when connected to a DC voltage of 110 V. What is the current through the lightbulb
What is the average kinetic energy of an ideal gas.
A baseball pitcher (m = 81 kg) is initially standing at rest on an extremely slippery, icy surface. What is the recoil velocity of the pitcher
What is the smallest thickness of a soap film (n=1.40) that would appear black if illuminated with 470nm light? Assume there is air on both sides of the soap film
Find out the altitude of the plane
Estimate the power radiated by the human body. Be sure to state the estimated values of all relevant quantities. You need only outline your calculations. How does this value compare with the average caloric intake for humans?
A copper wire is 2 meters long. when a certain load is hung from the wire, making sure the wire is straight, how much does each inter-atomic bond stretch
A metal container, which has a mass of 9.4kg contains 18kg of water. A 1.8 kg piece of the same metal, initially at a temperature of 200°C, is dropped into the water. The container and the water initially have a temperature of 14.1°C and the final..
Two equal length strips of aluminum and steel are heated. Which expands more? How much more - that is, by what factor is one expansion greater than the other?
A 1-cm-thick layer of water stands on a horizontal slab of glass. After entering the glass, what is the ray's angle from the normal
Two masses are connected by a light string passing over a light, frictionless pulley, Determine the speed of each object when the two pass each other
A 2.00-mol sample of hydrogen gas is heated at constant pressure from 302 K to 414 K. Calculate the increase in its internal energy
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