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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.
The rms speed of an oxygen molecule (O2) in a containerof oxygen gas is 700 m/s. What is the temperature of the gas
Two converging lenses, A with a focal length of +2.0cm and B with a focal length of +5.0cm, are placed 14 cm apart. An object is place 3.0cm to the left of lens A. Utilize the lens equation decide the characteristics of the image
A satellite has a mass of 7930 kg and is in a circular orbit9.88x106 m above the surface of a planet. The periodof the orbit is 16.1 hours. The radius of the planet is 3.16x106 m. What is the true weight of the satellite when itis at rest on the plan..
A 3 MH inductor and a 4 capacitor are in an LC circuit. The capacitor is charged to 5 and then the switch is closed. a. Sketch the graphs of q(t) and I(t). b. Calculate the period of oscillation. c. Calculate the potential energy in the circuit. d. C..
A tennis player, when performing a serve, applies an average force to a tennis ball of 525 N to a 55 g ball. What is the speed of the ball as it leaves the racket
Tendons are strong elastic fibers that attach muscles to bones. To a reasonable approximation, they obey Hooke's law. Find the force constant of this tendon in N/m
A beam contains 4.0 108 doubly charged positive ions per cubic centimeter, all of which are moving north with a speed of 1.3 105 m/s
A crate is pushed along a flat surface at constant velocity by a force of 68 N. The coefficient of kinetic friction is .30. What is the mass of the crate
Discuss the relative merits of using the Biot-Savart law and Ampere's law to calculate the magnetic field around the wire. In this case, is it necessary to include the Maxwell correction to Ampere's law?
imagine that you spill a cup (250 g) hot water, initially at 75 C, onto the cold ground on a winter fay, Calculate the net change in the entropy of the universe due to this process, and comment on the result
a calculate the one temperature at which fahrenheit and celsius thermometers agree with each other.b calculate the one
Two very small spheres are initially neutral and seperated by a distance of 0.6m. what is the magnitude of the electrostatic force that acts on each sphere
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