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A "diving bell" is a tube or pipe that is closed at the top and open at the bottom. It is lowered into a body of water with the open end down so that air is trapped inside and provides a place that divers can go for air without returning to the suface. A diving bell is lowered into a lake so that the interface between the trapped air and the water is 8m below the surface.
a) Find the absolute pressure of the air in the bell?
b) Assume that the bell has a total volume of 8m^3 and that air inside remains at the same temperature as the air above the lake. Find the volume of the trapped air in the previous part?
Initially at a temperature of 87.0?C, 0.300m3 of air expands at a constant gauge pressure of 1.39×105Pa to a volume of 1.47m3, Compute the total work done by the air
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A Ball begins rolling at the left and has just suffient energy to climb up to point C, which is the top of the hill on the right
One end of a long rod (n=1.5) is formed into a convex surface with a radius of curvature of 6cm. Find the image and object focal lengths, f' and f, and mark the locations of the foci in your to-scale sketch
Water at 20.0 °C is sprayed onto 0.236 kg of molten gold at 1063 °C (its melting point). What is the minimum mass of water that must be used
Two lightbulbs operate on the same potential difference. What is the ratio of the current in bulb A to the current in bulb B
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