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In each cycle of a Carnot engine, 97 J of heat is absorbed from the high-temperature reservoir and 63 J is exhausted to the low-temperature reservoir.
What is the efficiency of the engine?
A 16 cm x 16 cm square loop of wire lies in the xy-plane with its bottom edge on x-axis. The resistance of the loop is 0.490 ohms. A magnetic field parallel to the z-axis is given by B= 0.830 y^2 t, where B is in tesla, y in meters, and t in seconds...
7400 J of input heat to perform a certain amount of work. Engine 2 has an efficiency of 0.33, How much input heat does the second engine require
A dc motor is connected to a constant emf of 15.6 V. The resistance of its windings is 2.0 ohms. What is the back emf induced in the windings at normal speed
A car travels along a straight east-west road. A coordinate system is established on the road, how far from Mulberry Road did it start
An astronaut weighs 85 N on the Moon, where the acceleration of gravity is 1.62 m/s2. How much (in N) does she weigh on Earth
Three long parallel wires are 3.8cm from one another. Determine the magnitude and direction of the magnetic field at the midpoint of the side of the triangle between wire M and wire N
How many watts must a fluorescent bulb (25% efficiency) use to produce the same amount of light as a 100-watt incandescent bulb, What would the power consumption be for an LED
A Goodyear blimp typically contains 6280 m3 of helium (He) at an absolute pressure of 1.10 x 105 Pa. What is the mass (in kg) of the helium in the blimp
A 60 kg crate is lowered using arope over a fixed support. The rope exerts a constant upward forceof 500 N.? How fast is the crate traveling when it hits the floor
two large parallel metal plates are uniformly and oppositely charged and the electric field between them is 7.6 times
A baseball player loosening up his arm before a game tosses a 0.149-kg baseball, Find the constant angular acceleration of the arm and ball
A 395 turn circular loop coil 16 cm in diameter is initially aligned so that the axis is perpendicular to the earth's magnetic field. What is the magnitude of the earth's magnetic filed at this location
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