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A Carnot engine operating between energy reservoirs at temperatures 300K and 490Kproduces a power output of 800W.
a) What is the thermal efficiency of this engine?
b) What is the rate of heat input, in W?
c) What is the rate of heat output, in W?
The accompanying pressure-volume graph shows an engine cycle with one isothermal process, B-C. What is the net work done by the gas during one cycle
What are changes in the object's momentum and velocity. How much work is done if the similar tension is directed parallel to the snow.
A physics demo launches a ball horizontally while dropping a second ball vertically at exactly the same time. [Delayed Feedback] 1) Which ball hits the ground first?
My car has rear defrosters that are made of 13 wires embedded into the rear window. They can melt a thin layer of ice, What is the cross-sectional area of each wire
A ball is launched from a cannon at the ground level with speed v0=40 m/s at an angle 36.9 degrees above the horizontal. Find the horizontal range
A string is wrapped around a wheel of radius 0.4 m and moment of inertia 25 kg-m2. If the string is pulled with a force of 60 N, what is the angular acceleration of the wheel
Using your knowledge of statics, discuss briefly why the magnitude and direction of the knee reaction force varies with the amount of lower leg flexion and the amount of added weight.
Ships A and B leave port together. For the next two hours, ship A travels at 40.0mph in a direction 20.0 ?west of north while the ship B travels 45.0, What is the speed of ship A as seen by ship B
A 10.4-g bullet is fired into a stationary block of wood having mass m = 5.03 kg. determine the original speed of the bullet
A 33.4 cm focal-length converging lens is 24.8 cm behind a diverging lens. Parallel light strikes the diverging lens. What is the focal length of the diverging lens
A bullet of mass m = 25 g is fired into a wooden block of mass M = 4.5 kg. The block is attached to a string of length 1.5 m. The bullet is embedded in the block, causing block to then swing.
Early black-and-white television sets used an electron beam to draw a picture on the screen. What is the speed of electrons in the beam
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