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1. Modern aircraft gas turbine engines have pressure ratios of 30 or higher. Take that value with compressor inlet conditions of 1 bar and 300 K and a turbine inlet temperature of 1700 K and calculate the cycle efficiency. Then calculate the back work ratio. Assume the compressor and turbine are ideal. What is the entropy generation for the compressor and for the turbine?
2. Compressor technology has progressed further than turbine technology so compressor isentropic efficiencies approach 98% while those for turbines are nearer 92%.
find the combined mass of the dog and basket. chandelier with mass is attached to the ceiling of a large concert hall by two cables.
When connected to a 10 volt battery, a capacitor stores 5 *10^-4 J of energy. How much energy would this capacitor store when connected to a 20 volt battery
An electric scooter has a battery capable of supplying 140 Wh of energy. If friction forces and other losses account for 60 percent of the energy usage, what altitude change can a rider achieve while driving in hilly terrain, if the rider and scooter..
Sean is running a 100m dash. When the starter's pistol fires, he leaves the starting block and continues speeding up until he reaches his top speed of 11m/s 6s into the race. He holds this speed for 2s and then gradually slows down until he crosse..
An electron has an initial velocity of 4.9 × 106 m/s in a uniform 1.9 × 105 N/C strength electric field, What is the direction of the electric field
When ultraviolet light with a wavelength of 254 nm falls upon a clean metal surface, What is the photoelectric threshold wavelength for this metal
A student uses an audio oscillator of adjustable frequency to measure the depth of a water well. How deep is the well
A 0.61 kg block is hung from and stretches a spring that is attached to the ceiling. What is the mass of the second block
An object weighing 305 N in air is immersed in water after beingtied to a string connected to a balance. The scale now reads 271 N.Immersed in oil, the object appears to weigh 278 N . The density ofthe object is 8970.588 kg/m^3. Find the density of t..
Find out the maximum altitude reached by the rocket.
An object is placed 13 cm in front of a converging lens with a focal length of 1 cm. Carefully draw a ray diagram on a piece of graph paper , Is the image magnified or reduced
A Carnot refrigerator extracts 30.0 kJ as heat during each cycle, operating with a coefficient of performance of 5.00. find the energy per cycle transferred as heat to the room
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