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1. Steam enters the turbine of a power plant at 200. psia, 500.°F. How much will the Carnot cycle thermal efficiency increase if the condenser pressure is lowered from 14.7 to 1.00 psia?
2. Steam enters the piston cylinder of a Newcomen cycle steam engine at 14.7 psia, 212°F and condenses at 6.00 psia. Plot the thermal efficiency of the reversible cycle vs. the average cylinder wall temperature over the range 170.°F ≤ (Tb)avg ≤ 212°F. Neglect the power used by the boiler feed pump.
a. a positive charge is dropped downward into a uniform magnetic field directed into the page. what direction is the
Illustrate what would be the relative strengths and weaknesses of this study? What ethical considerations must be taken into account while undertaking this study?
The index of refraction for violet light in plastic is greater than that for red light by 0.0410. Delaying any rounding off of calculations until the very end, find the index of refraction for violet light in plastic.
A certain hydrolic system is designed to exert a force 108 times as large as the one put onto it. What must be the ratio of their diamerters
X rays diffract from a crystal in which the spacing between atomic planes is .200nm. what is the angle of the first-order diffraction
A motor running on US power (110 V, 60 Hz) produces a back EMF of 30 V and draws 2.0 A of current. What is the resistance of the motor
A particle known as a pion lives for a short time before breaking apart into other particles. Assume it is moving at a speed of 0.980c, and an observer who is stationary in a laboratory measures the particle's lifetime to be 5.00*10-8 s.
a 16.0 kg box is released on a 35.0deg incline and accelerates down the incline at 0.272 ms2. find the friction force
The Calorie (or kcal) is another energy unit and is commonly used to measure food energy (as well as heat). How many Calories would you burn walking up a flight of stairs for an hour
A horizontal aluminum rod 4.8 cm in diameter projects 5.6 cm from a wall. A 1200 kg object is suspended from the end of the rod, Find the shear stress on the rod
Digital communication exercises. Letters drawn from a four-letter alphabet have the indicated probabilities. Letter and probability
Suppose that you want to take a photograph of yourself as youlook at your image in a flat mirror 2.5 m away. For what distance should the camera lens be focused
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