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A diving experiment is to be performed with a mixture of helium and air at a total pressure of 50.0 psia. The composition must be such that the partial pressure of oxygen in the compressed mixture is the same as that in air at standard pressure and temperature (14.7 psia and 70.0°F). Assuming a closed system and ideal gas behavior, determine
a. The work required to isentropically compress 2.70 lbm of the mixture from 14.7 psia, 70.0°F to 50.0 psia.
b. The heat transfer required to aergonically cool the compressed mixture back to 70.0°F again.
A point on the rim of a 0.55 m diameter grinding wheel changes speed uniformly from 12 m/s to 20 m/s in 8.3 s. What is the average angular acceleration of the wheel
an experiment that can be used to measure velocity of a bullet is to have two cardboard disks attached to a rotating
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Two particles each with charge +1.86 µC are located on the x axis. One is at x = 1.00 m, and the other is at x = ?1.00 m. (a) Determine the electric potential on the y axis at y = 0.320 m. .... kV (b) Calculate the change in electric potential energy..
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1. an electric motor performs 2000 j of work while lifting a 50 kg mass. how far does it lift the mass?it it takes
An infinitely long line of charge has a linear charge density of 4.50×10^?12 C/m. How close does the proton get to the line of charge
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