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1. Show that the product of the compressor and turbine isentropic efficiencies must be greater than (TL/TH) 1/2 if a Brayton cycle gas turbine unit is to operate at its maximum power output.
2. A test on an open loop Brayton cycle gas turbine produced the following results:
a. The cycle thermal efficiency.
b. The isentropic efficiency of the turbine.
An infinitely long line of charge has linear charge density 5.00 x10-12 C/m. A proton (mass 1.67 x10-27 kg, charge +1.60 x10-19 C) is 18 cm from the line and moving directly toward the line at 1.50 x103 m/s. How close does the proton get to the li..
A 115 mCi radioactive tracer is made in a reactor. When delivered to a hospital 16 hours later its activity is 95 mCi. What is the tracer's half-life
A 70 kilogram trampoline artist jumps vertically upward from the top of a platform with a speed of 5.5 m/s. If the trampoline behaves like a spring of spring constant5.2 x 104 N/m, determine how far does he depress it
The magnitude of the electric field due to a disk of radius 3 m and a uniformly distributed positive charge is measured to be 150 N/C at a location in the air 6 mm from the center of the disk, what is the magnitude of the electric field due to the ..
A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. The thrust of its engines is 4.65 x 105 N. In being launched from rest it moves during a distance of 60.3 m and has a kinetic energy of 5..
A centrifuge in a medical laboratory is switched on and rotates through 3900 revolutions. determine the final angular speed of the centrifuge
If liquid oxygen is stored as saturated liquid at its normal boiling point, find what is the enthalpy change per mole of oxygen between the liquid storage tank and the state which the oxygen is at 1.5atm and 27oC
A square loop (sides A, B, C, D = 11 cm; I = 11 A) lies in the vertical yz plane. Looked at from the right, the current is clockwise. What is the torque on the loop?
A sinusoidal wave of wavelength 1.67 m and amplitude 0.100 m travels on a string with a speed of 1.10 m/s to the right. Find the angular frequency for this wave
A sealed tank containing seawater to a height of 11.1 also contains air above the water at a gauge pressure of 2.95. Water flows out from the bottom through a small hole.
A hobby rocket reaches a height of 68.4 meter and lands 225 meter from the launch point. Find what was the angle of launch
four passengers with combined mass 250 kg compress the springs of a car with worn out shock absorbers by 4.00cm when
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