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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 horizontal wire is free to slide on the vertical rails of a conducting frame, what is the terminal speed of the wire
A single force acts on a 4.4 kg particle-like object in such a way that the position of the object as a function of time is given by x = 3.8t - 4.6t2 + 1.3t3
The collision between a hammer and a nail can be considered to be approximately elastic. Estimate the kinetic energy acquired by a 12-g nail
Some gliders are launched from the ground by means of a winch, which quickly reels in a towing cable attached to the glider. What average power must the winch supply in order to accelerate a 195-kg ultra light glider from rest to 28.4 m/s over a hori..
a given star is a sphere with a radius of 5.81x108 m and an average surface temperature of 6970 k. determine the amount
q1. revolutionary war cannon with a mass of 2220 kg fires a 22.7 kg ball horizontally. the cannonball has a speed of
A curve of radius 152 m is banked at an angle of 11°. An 722-kg car negotiates the curve at 86 km/h without skidding. avoid the effects of air drag and rolling friction.
A solenoid is made by wrapping a wire so that it makes a solenoid (coil) having 500 turns of diameter 8.00 cm and length 40.0 cm. find the self-induced emf in the solenoid
In a certain RLC circuit, a46-? resistor, a11-mH inductor, and a 5-µF capacitor are connected in series with an AC power source for whichVrms=12V andf= 100 Hz.
q1. cannon at the top of a 147 m high cliff fires at a pirate ship. the cannonball has an initial velocity of 114 ms at
A steel wire with mass 25.5 g and length 1.16 m is strung on a bass so that the distance from the nut to the bridge is 1.10 m, Calculate the wavelength of the string's vibration
A simple harmonic oscillator consists of a block of mass 1.40 kg attached to a spring of spring constant 165 N/m. When t = 4.00 s, the position and velocity of the block are x = +0.129 m and v = +3.415 m/s.What is the amplitude of the oscillations?
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