Physics, 14.01.2020 18:31 21smartness21
At a fabrication plant, a hot metal forging has a mass of 75kg and a specific heat capacity of 430 j/(kg. c°). toharden it, the forging is immersed in 710 kg of oil that has atemperature of 32 °c and a specific heat capacity of 2700j/(kg. c°). the final temperature of the oil and forgingat thermal equilibrium is 47 °c. assuming that heat flowsonly between the forging and the oil, determine the initialtemperature of the forging.
Answers: 3
Physics, 22.06.2019 10:00
The rocket is fired vertically and tracked by the radar station shown. when θ reaches 66°, other corresponding measurements give the values r = 32700 ft, r¨ = 85 ft/sec2, and θ˙ = 0.019 rad/sec. calculate the magnitudes of the velocity and acceleration of the rocket at this position.
Answers: 3
Physics, 22.06.2019 14:00
Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.
Answers: 1
At a fabrication plant, a hot metal forging has a mass of 75kg and a specific heat capacity of 430 j...
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