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Calculate the efficiency of a Rankine cycle that is modified from the parameters used in the text in each of the following three ways (one at a time), and comment briefly on the results: (a) reduce the maximum temperature to 500°C; (b) reduce the maximum pressure to 100 bars; (c) reduce the minimum temperature to 10°C.
a block of mass lsquom is suspended from the ceiling of a stationary standing elevator through a spring of spring
A car misses a turn, sinks into a shallow lake, coming to rest on its side with the door horizontal and at a depth of 9.3 m. find the force exerted on the inside of the door by the air
A specific satellite was located in a circular orbit about 140 meter above the Earth. Find what time required for one complete revolution
A submarine suddenly breaks up at a depth of 248 m below sea level. The air in the submarine will then be suddenly (adiabatically) compressed. The initial pressure of the air is 1.0 atm, and the initial temperature is 23.0°C.
An RL circuit has a 5 kO resistor and a 1 mH inductor. This circuit is driven by a 100 Hz sine wave with 1 V amplitude. What is the amplitude of the current in the circuit
A block of mass 1.4 kg is moving up a 40 degree inclined plane at a speed of 2 m/s. how far up the plane will the block go before stopping
If the angle between wires supporting the street lamp is reduced to 110°, what is the tension in each wire.
At an outdoor market a bunch of bananas is set to oscillatory motion with amplitude of 20.0 cm on a spring with a force constant of 16 N/m.
A .430 kg block of wood hangs from the ceiling by a string, and a 7.10 x 10^-2 kg wad of putty is thrown straight upward, How high does the putty-block system rise above the original position of the block
A jet plane lands with a speed of 85 m/s and can accelerate at a maximum rate of -4.20 m/s2 as it comes to rest. what is the minimum time needed before it can come to rest
A helicopter is flying horizontally with a speed of 444 m/s over a hill that slopes upward with a 2% grade (i.e., the "rise" is 2% of the "run"). What is the component of the helicopter's velocity
in your right hand you hold a grocery sack with a gallon of milk. you left hand holds an identical grocery sack with a loaf of bread. which has the shorter period of oscillation
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