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An engine absorbs 1.74 kJ from a hot reservoir at 277°C and expels 1.21 kJ to a cold reservoir at 27°C in each cycle.
(a) What is the engine's efficiency?
%
(b) How much work is done by the engine in each cycle?
J
(c) What is the power output of the engine if each cycle lasts 0.305 s?
kW
What is the kinetic energy of α particle while it reaches the other plate? The distance between the plates is 33 cm.
A flat sheet of sodium chloride has a thickness of 2.50 cm. It is on top of a flat sheet of fused quartz that has a thickness of 1.26 cm, how far (in cm) would it have traveled in a vacuum
A 1940-kg car experiences a combined force of air resistance and friction that has the same magnitude whether the car goes up or down a hill at 32.2 m/s. At what angle is the hill inclined above the horizontal
A piano tuner sounds two strings simultaneously. One has been previously tuned to vibrate at 284.0 Hz. The tuner hears 5.0 beats per second. What was the original frequency of the untuned string
A football is kicked at an angle of 37.0 degrees with a velocity of 20.0 m/s. calculate the velocity at the maximim height
A French submarine and a U.S. submarine move toward each other during maneuvers in motionless water in the North Atlantic, What are the speeds of the U.S. and the French subs
presume you had job offers from two companies that differed only in how often they produced CEOs. Would these differences affect your decision.
The difference in piezometric pressure, pz,A – pz,B. Express both answers in kPa and pressure differences pA - pB.
What is the greatest angle of elevation
Another laser amplifier gives an output of 5I0 when it receives input intensity I0 tuned to w0, the centre frequency of the laser transition. When the input radiation istuned to nearby angular frequency w1
if you place the magnifying glass at half the distance needed to cook an ant, how big would the image of the ant be
one hundred meters of 2.0mm diameter wire has a resistance of 0.532 ohm. What is the resistivity of the material from which the wire is made
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