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A certain heat engine does 8.0 kJ of work and dissipates 9.00 kJ of waste heat in a cyclical process.
(a) What was the heat input to this engine?
(b) What was its efficiency?
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
The south pole of a bar magnet sits inside a rectangular, closed Gaussian surface, while the north pole sits outside. What is the magnetic flux through the closed surface
A ball has a diameter of 3.90 cm and average density of 0.0845 g/cm3. What force is required to hold it completely submerged under water
You have three identical charged spheres, each with a charge of 4.10 µC. Find the magnitude of the electric field at the "empty" corner
An object is in front of a converging lens with a focal length of 11.0 cm. The lens produces a real image located 25.0 cm from the lens. what is the image distance of the new lens
A 770 kg car moving at 21 m/s brakes to a stop. The brakes contain about 15 kg of iron, which absorbs the energy. What is the increase in temperature of the brakes.
What is the least radius of the circular path? (b) At this radius, what is the force causing the centripetal acceleration of the pilot.
A reflecting telescope is built with a 10-cm-diameter mirror having a 1.00 m focal length. What is the magnification of the telescope
A living specimen in equilibrium with the atmosphere contains one atom of 14C (half-life = 5 730 yr) for every 7.70 1011 stable carbon atoms. Find the number of carbon atoms in the sample
A 3600 kg block falls vertically through 5.6 m and then collides with a 640 kg pile, driving it 4.9 cm into bedrock. find the magnitude of the average force on the pile
Two children are playing a game. The rst throws a basketball straight up, and the second tries to hit it with a thrown baseball. What is the angular impulse on the basketball
A hollow spherical shell with mass 1.80kg rolls without slipping down a slope that makes an angle of 40.0? with the horizontal. Find the magnitude of the frictional force acting on the spherical shell
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