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A reversible heat engine operates between thermal reservoirs at 810 K and 180 K. If 8280 J are extracted from the hot reservoir, how much work is done by the heat engine?
A charge of 3.0 micro coulombs and a second charge are initially far apart. If it takes 29 J of work to bring them to a final configuration in which the 3.0 micro coulombs is at x = 1.0 mm,
Suppose a single electron orbits about a nucleus containing two protons (+2e), as would be the case for a helium atom from which one of the naturally occuring electrons is removed. The radius of the orbit is 3.45 × 10-11 m. Determine the magnitude..
Assume that the cell is floating on the surface of water, and that the water surface has a coefficient of friction of u=0.300. You now want to use a laser to move cell horizontally, along the surface of the water.
you measure wavelength divided by 2 to be 70cm. The temperature in the lab is 22 degrees celsius. What is the frequency of the resonance
A child is riding a merry-go-round which completes a revolution every 8.36 s. The child is standing 4.65 m from the center of the merry-go-round. Evalute the magnitude of the centripetal acceleration of the child?
A glass is half-full of water, with a layer of vegetable oil (n = 1.47) floating on top. Determine the critical angle for the oil-water interface
Three capacitors (3.81, 5.89, and 11.3 ?F) are connected in series across a 45.0 V battery. Calculate the voltage across the 3.81 F capacitor?
What focal length does the lens require
A meter stick travels past an observer at the speed of 0.9c. What length would be recorded by the observer
A baseball is confined between two thick walls a distance 0.5m apart. Calculate the zero point energy of the baseball
q1. an aluminium block of mass m1 3 kg and a copper block of mass m2 8 kg are connected by a light string over a
The telescope at a small observatory has objective and eyepiece focal lengths respectively of 20.0 m and 12 cm. determine length of the barrel of the telescope
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