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Air is flowing at steady state through a 5 cm diameter pipe at a flow rate of 0.35 mole/min at P = 5 bar and T = 500 K. It flows through a throttle valve and exits at 1 bar. Assume air is an ideal gas with CP = 29.1 J/mol-K. If the throttle valve was replaced by a reversible steady-state flow device to permit exactly the same state change for the air in this steady-state process, at what rate could work could be obtained? Heat transfer, if desired, can occur with the surroundings at 298 K, which may be considered a reservoir.
A drug prepared for a patient is tagged with 9943Tc, which has a half-life of 6.05 h. What is the decay constant of this isotope
The temperature coefficient of resistivity for the metal gold is 0.0034 (C°)-1, and for tungsten it is 0.0045 (C°)-1. what is the percentage increase in the resistance in a tungsten wire
In exercising, a weight lifter loses 0.123 kg of water through evaporation, find the change in the internal energy of the weight lifter
a particle's rest mass is 1.25 M0c^2, decays into two identical paricles of mass .45M0 each. calculate the possible velocities of the mother particle
A 3.8kg block of wood sits on a table. A 3.0 g bullet, fired horizontally at a speed of 450m/s , What is the speed of the block immediately after the bullet exits
Starting from rest, a disk rotates about its central axis with constant angular acceleration. In 5.0 s, it rotates 5 rad. What was the angular acceleration during this time
Two circus performers, Jack and Jill, whose total mass is 120 kg, start a swing which is 5 m long such that initially the rope attached to their swing makes an angle of 36 degrees with the horizontal.
Along a straight road through town, there are three speed-limit signs. They occur in the following order: 54 , 35 , and 18 mi/h, with the 35 -mi/h sign located midway between the other two.
Two identical carts travel at 1m/s in opposite directions on a common horizontal surface. They collide head-on and are reported to rebound, each with the speed of 2m/s.
The heater element of a toaster is 5.40m length of nichrome wire, whos diameter is 0.480mm. What is the power drawn by the toaster
A parallel-plate capacitor has 3.95 cm2 plates that are separated by 4.29 mm with air between them. how much energy does it store
Derive a formula for the maximum elevation of the jumper's center of gravity in terms of the crouch depth, c, the equivalent force to weight ratio, Fequiv/W, the platform speed, Vp and other relevant parameters.
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