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To make ice, a freezer that is a reverse Carnot engine extracts 38 kJ as heat at -10°C during each cycle, with coefficient of performance 6.0. The room temperature is 33.9°C. How much:
(a) energy per cycle is delivered as heat to the room and
(b) work per cycle is required to run the freezer?
Give your answers in kJ.
A parachutist leaves a stationary plane and free falls for 50.0 meters (ignore air resistance for the free fall). At what height did she leave the plane
An alpha particle (helium nucleus, charge 2e) starts from rest and travels a distance of 1.88 cm under the influence of a uniform electric field of magnitude 12.2 kV/m
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The brakes are applied to a car traveling on a dry, level highway. A typical value for the magnitude of the car'sacceleration is 5.35 m/s2. If the car's initial speed is 29.7 m/s, how long does it take to stop and how far does it travel, starting ..
question1a two kilogram block is dropped from a height of 0.45m above an incompressible spring. the spring has an
The brightest star in the night sky is Sirius, which is at a distance of 8.3x1016 m. When we look at this star, how far back in time are we seeing it? Enter answer in years. Do not enter units.
A 2.00-g charged particle is released from rest in a region that has a uniform electric field = (160 N/C), Determine the charge of the particle
In the figure below, the converging lens' focal length is 14.4 cm, d = 13.6 cm, and the diverging lens' focal length is -14.1 cm. Where is the image formed by the converging lens,
A common capacitor found in the lab is in the form of a cylinder of length 2.5 cm. What is the value of the capacitance
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