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Physics, 19.07.2019 23:10, joshuajoseph249
A20,000-kg railroad car travels down the track at 30 m/s and hits a second stationary railroad car of 10,000 kg. the cars become coupled and continue traveling. calculate the final velocity of the cars.
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Answers: 2
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Suppose that two tanks, 1 and 2, each with a large opening at the top, contain different liquids. a small hole is made in the side of each tank at the same depth 1.57 m below the liquid surface, but the hole in tank 2 has 2.49 times the cross-sectional area of the hole in tank 1. (a) what is the ratio ρ1/ρ2 of the densities of the liquids if the mass flow rate is the same for the two holes? (b) what is the ratio rv1/rv2 of the volume flow rates from the two tanks? (c) at one instant, the liquid in tank 1 is 14.9 cm above the hole. if the tanks are to have equal volume flow rates, what height above the hole must the liquid in tank 2 be just then?
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Physics, 22.06.2019 10:00, kaniyawilhite
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A20,000-kg railroad car travels down the track at 30 m/s and hits a second stationary railroad car o...
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