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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?
A light bulb is wired in series with a 131-? resistor, and they are connected across a 120-V source. What are the two possible resistances of the light bulb
A 5.1 kg bucket of water is raised from a well by a rope. find the force exerted by the rope on the bucket.
The volume of a gas is halved during an adiabatic compression that increases the pressure by a factor of 2.5
The outside mirror on the passenger side of a car is convex and has a focal length of -5.4 m. Find the image distance of the truck
A 80.0 Hz generator with an rms voltage of 150 V is connected in series to a 3.20 k ohm resistor, estimate the phase angle between the current and the voltage
Care for the coffee as though it were pure water and neglect energy exchanges with environment.
A 4700000 kg spaceship moves away from Earth with a speed of 0.71 c. What is the magnitude of the ship's classical momentum
A ray of 600 nm light traveling through air is incident on a slab of diamond (n=2.41) at an angle of theta=60 to the normal. What is the wavelength of light inside the diamond
A irregular piece of metal has a dry mass of 5.7 kg. Once it is submerged it has an apparent mass of 2.4 kg. What is the density of the piece of metal
A 23 kg child goes down a straight slide inclined 38? above horizontal. The child is acted on by his weight, How large is the normal force of the slide on the child
what is the equivalent resistance between points A and B?
An Ar+ laser emits radiation at a wavelength of 515 nm, and a power of 7 W. Determine how many argon ions
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