Friction between the canoe and the water
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A fire hose 3.51 cm in diameter is capable of spraying water at a velocity of 24.7 m/s. For a continuous horizontal flow of water, what horizontal force should a fireman exert on the hose to keep it stationary?
Based on inernal energy considerations, what dislocation density in Cu is needed to make the crystalline form of Cu unstable with respect to the liquid form? What would be dislocation spacing be at this density?
The power input P to a centrifugal pump is assumed to be a function of the volume flow rate, Q, impeller diameter, d, angular velocity. Can one of the Pi-groups be considered a Reynolds number?
The center of mass of a proton with mass 1.673·10-27 kg and alpha particle with mass 6.645·10-27 kg is moving with a speed of 2.235×105 m/s. What is the speed of the proton in the laboratory frame where the alpha particle is at re
A man with a mass of 77.9 kg stands up in a 83-kg canoe of length 4.00 m floating on water. He walks from a point 0.75 m from the back of the canoe to a point 0.75 m from the front of the canoe. Assume negligible friction between the canoe and the
Water vapor enters a compressor at 50 kPa and 150 C, and leaves at 400 kPa with the same specific entropy as at the inlet. What is the temperature of the water at the compressor exit.
Using dimensional analysis, nondimensionalize the period, T, and express its dependence on the other non-dimensional terms.
What is the initial thrust exerted on your spacecraft by the retro-rocket? What is the thrust's direction (positive if in the direction of the velocity of the spacecraft, or negative if in the opposite direction to the velocity of the spacecraft.)
A fine copper wire(0.07-cm diameter) is initially heated to 175C. The wire is suddenly exposed to an environment at 40C with a heat-transfer coefficient of 60W/(m^2*C).
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