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A freezer has a coefficient performance of 6.30. The freezer is advertised as using 516 kW-h/y.
(a) On average, find how much energy does the freezer use in a single day?
________ J
(b) On average, find how much thermal energy is removed from the freezer each day?
________J
(c) Find what maximum amount of water at 21.7°C could the freezer freeze in a single day? (One kilowatt-hour is an amount of energy equal to running a 1-kW appliance for one hour.)
_______kg
Two railroad cars, each of mass 6500 kg and traveling 98 km/h in opposite directions, collide head-on and come to rest. Find how much thermal energy is produced in this collision
An elevator has mass 550kg , not including passengers. The elevator is designed to ascend, at constant speed, What is the maximum number of passengers that can ride in the elevator
At the same moment, one rock is thrown upward at 4.5 meter per second and another thrown downward at 3.4 meter per second. Determine the relative velocity of the first rock
A person with a weight of 237 lb stands on two feet with their weight equally distributed between the two shoes, What is the pressure on each shoe independently
A 15 g rifle bullet traveling 250 m/s buries itself in a 3.0 kg pendulum hanging on a 2.9 m long string, which makes the pendulum swing upward in an arc. Clarify the horizontal component of the pendulum's displacement.
A Chinook wind blowing at 800mb has a temperature of 100F and a mixing ratio of 4 g/kg. Is this the same as the air at 1000mb on the windward side of the mountains having a temperature of 294.5K and a mixing ratio of 10 g/kg or is it the same as t..
Yellow-orange light from a sodium lamp of wavelength 596 nm is aimed at two slits separated with 1.90 x 10 -5 m. What is the distance from the central line to the first- order yellow line if the screen is 0.600 m from the slits?
A car chases a coyote down a road ending in a sheer cliff. The car has a speed of 40 m/s and the coyote has a speed of 30 m/s. What beat frequencies do each the coyote and the driver hear
an airplane has a mass of 27500 kg and takes off under the influence of a constant net force of 41000 n. what is the
Jill of the Jungle swings on a vine 6.9 meter long. Obtain what is the tension in the vine if Jill, whose mass is 63 kilogram, is moving at 2.4 m/s when the vine is vertical
Lightning can be studied with a Van de Graaff generator, which consists of a spherical dome on which charge is continuously deposited by a moving belt, What is the maximum potential of the dome
A rotating door is made from 4 rectangular glass panes. The mass of each pane is 85 kg. Determine the magnitude of the doors angular acceleration
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