Engineering, 26.11.2019 21:31 samueltaye
Adisc magnet is used to hold a piece of paper (0.1 mm thick) to the door of a refrigerator. the magnet is 6 cm in diameter and 0.75 cm thick. its mass is 500 grams. assuming that the coefficient of friction between the paper and the refrigerator is 0.3, what is the minimum remanent magnetism (in gauss) that the magnet must have in order to keep the magnet and paper from falling?
Answers: 2
Engineering, 03.07.2019 14:10
If the thermal strain developed in polyimide film during deposition is given as 0.0044. assume room temperature is kept at 17.3 c, and thermal coefficient of expansion for the film and the substrate are 54 x 10^-6c^-1 and 3.3 x 10^-6c^-1respectively. calculate the deposition temperature.
Answers: 3
Engineering, 03.07.2019 15:10
Two flowing streams of argon gas are adiabatically mixed to form a single flow/stream. one stream is 1.5 kg/s at 400 kpa and 200 c while the second stream is 2kg/s at 500 kpa and 100 ? . it is stated that the exit state of the mixed single flow of argon gas is 150 c and 300 kpa. assuming there is no work output or input during the mixing process, does this process violate either the first or the second law or both? explain and state all your assumptions.
Answers: 1
Engineering, 04.07.2019 18:10
The temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false
Answers: 2
Engineering, 04.07.2019 18:10
Afluid flows with a velocity field given by v=(x/t)i.. determine the local and convective accelerations when x=3 and t=1.
Answers: 2
Adisc magnet is used to hold a piece of paper (0.1 mm thick) to the door of a refrigerator. the magn...
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