Rate of change in potential energy
A 70 kg. skydiver reaches a teminal velocity of 50 m/s. At what rate is the drag force dissipating his kinetic energy? How does this rate compare with his rate of change in potential energy?
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The results of a recent study regarding smoking and three types of illness are shown in the following table.
A deep-sea diver uses a gas cylinder with a volume of 10.0L and acontent of 51.2 g of O2 and 32.6 g of He. Calculate the partial pressure of each gas and the total pressure if the temperature of the gas is 19 degrees C.
Two source points S1 and S2 are emitting waves with wavelength .5m they are 1.75m apart. If a sound detector was to circle around the midpoint of the two sources, how many points are exactly in phase and how many are exactly out of phase?
A steam-driven piston/cylinder is used to catapult jets from aircraft carriers. What is the minimum required steam-catapult piston volume to supply the other part of the necessary energy?
The plate length in the direction of flow is 0.305 m and its temperature is 333.2K. Calculate the heat-transfer coefficient assuming laminar flow.
An observer in S' moving along x axis at speed v relative to S also observes two flashes, but the blue flash occurs 6μs before the red. What is the magnitude and direction of v?
Determine the acceleration of each plate when the three horizontal forces are applied. The three plates are stacked on top of eachother, the bottom plate has a horizontal force.
Carbon diselenide (CSe2) is a liquid at roomtemperature. The normal boiling point is 125oC, and themelting point is -45.5oC. Carbon disulfide(CS2) is also a liquid at room temperature with normalboiling and melting points of 46.5oC and-111.6oC, respe
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