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A Carnot engine with a hot-reservoir temperature of 380 degree C has the same thermal efficiency. What is the cold-reservoir temperature in degree C. The heat engine does 200{\rm J} of work per cycle while exhausting 700{\rm J} of heat to the cold reservoir. The engine's thermal efficiency is 22.2%.
Two resistors, 80.0 and 64.0 , are connected in parallel. The current through the second resistor is 4.30 A, What is the total power supplied to the two resistors
A reversible power cycle whose thermal efficiency is 40% receives 50 kJ by heat transfer from a hot reservoir at 600 K and rejects energy by heat transfer to a cold reservoir at temperature Tc. Determine the energy rejected in KJ
A disc rolls down an inclined plane of angle 30o (see figure). What is the acceleration of the disc (in m/s2)
What stage of the scientific method would someone be at if they make a prediction that drinking alcohol will make people more violent throughout a sporting event.
If the light from the spotlight strikes the mirror at an angle to the normal, what angle to the normal would you expect for the reflected rays.
this question relates directly to the vorperian and kent 2007 article vowel acoustic space development in children a
an object is at a distance d to the left of a flath screen. A converging lens with focal length f
A load of bricks with mass = 15.4 kg hangs from one end of a rope that passes over a small, frictionless pulley. What is the tension in the rope while the load is moving
A mass at the end of a spring is at distance x = +2.18 cm from the equilibrium position moving with velocity v = - 20.2 cm/s. Find the amplitude of the motion in cm
On earth, two parts of a space probe weigh 13500 N and 3790 N. These parts are separated by a center-to-center distance of 14.4 m, Find the magnitude of the gravitational force
At a given point above the surface of Earth, the gravitational acceleration is equal to 7.8 m/s2. At what speed could a satellite be in orbit at this point
A bowling ball encounters a 0.760-m vertical rise on the way back to the ball rack, as the drawing illustrates. Find the translational speed at the top
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