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Steam enters a turbine in a Rankine cycle power plant at 200 psia and 500 degrees F.
1) Compute the isentropic thermal efficiency if the condenser pressure is 14.7 psia
2) How much will the isentropic thermal efficiency change if the condenser pressure is 1.0 psia.
A 225 kg projectile, fired with a speed of 109 m/s at a 66.0 angle, breaks into three pieces of equal mass at the highest point of its arc (where its velocity is horizontal). Determine the energy released in the explosion
a stable nucleus contains many protons very close to each other all positively charged. why do the protons not fly
A 5.16 multiply.gif 10-5 H solenoid is constructed by wrapping 64 turns of wire around a cylinder with a cross-sectional area of 8.80 multiply.gif 10-4 m2, Determine the change in the length of the solenoid
A 0.22-kg stone is held 1.2 m above the top edge of a water well and then dropped into it. The well has a depth of 5.1 m. (a) Relative to the configuration with the stone at the top edge of the well, what is the gravitational potential energy of th..
If 1800J of heat are added to a 190-g object, its temperature increases by 10o C. What is the heat capacity of this object
A family ice show is held in an enclosed arena. The skaters perform to music playing at a level of 87.5 dB. What is the combined sound level
Two point charges Q1 = +4.30 nC and Q2 = -2.30 nC are separated by 27.0 cm. What is the potential energy of the pair of charges
1. a resonant circuit in a radio receiver is tuned to a certain station when the inductor has a value of 0.157 mh and
One of the concrete pillars that support a house is 2.5-m tall and has a radius of 0.50 m. The density of concrete is about 2.3 x 10^3 kg/m3. Find out weight of this pillar in pounds (1 N = 0.2248 lb)
After sliding down a snow-covered hill on an inner tube, Ashley is coasting across a level snowfield at a constant velocity of +2.4 m/s. Miranda runs after her at a velocity of +4.4 m/s and hops on the inner tube. How fast do the two of them slide ac..
A vertical container with base area measuring 16 cm by 18 cm is being filled with identical pieces of candy, each with a volume of 50 mm3 and a mass of 0.020g. Suppose that the volume of the empty spaces between candies is negligible.
a small metal sphere q1 carrying a net charge of -2.60microc is held in a stationary position by insulating supports.
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