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During each cycle, a refrigerator ejects 605 kJ of energy to a high-temperature reservoir, and takes in 545 kJ of energy from a low-temperature reservoir.
(a) Determine the work done on the refrigerant in each cycle.(in KJ)
(b) Determine the coefficient of performance of the refrigerator.
Indiana Jones is pushing back a 285 kg box which slides 4.3 m down a 29° incline and kept from accelerating. Calculate the force exerted by jones
Find an expression for acceleration a of a stationary observer in Schwarzschildspacetime and show that generally it does not vanish (as it would for a stationaryobserver in Newtonian gravitation).
The total electric flux from a cubical box 40.0cm on a side is 2280 Nm^(2)/C. What charge is enclosed by the box?
Legend has it that, many centuries ago, Archimedes jumped out of his bathtub and ran across town naked screaming "Eureka!" after he solved an especially difficult problem.
A flat, solid cylindrical grinding wheel with a diameter of 26.0cm is spinning at 2900rpm when its power is suddenly turned off. A workman continues to press his tool bit toward the wheel's center
Assume that at sea-level the air pressure is 1.0 atm and the air density is 1.3 kg/m3. What would be the height of the atmosphere if the air density were constant
Water flows over a section of Niagara Falls at a rate of 1.07 × 106 kg/s and falls 40 m, How many 70 W bulbs can be lite with this power
A 70 kg teen is riding a popular amusement park ride in which a large cylindrical chamber of diameter 4 meters, is spun along a vertical axis. what torque must have been applied to get it going
An air-filled capacitor consists of two parallel plates, each with an area of 7.60 cm2, separated by a distance of 1.95 mm. If a 21.7-V potential difference is applied to these plates, calculate the following. (a) the electric field between the pl..
What is the resultant vector, R, obtained by adding vectors C and D? Express the magnitude to three significant figures. Express the angle to one decimal place.
A child in a swing starts from rest, while pulled back at an angle of 30 degrees from vertical. Determine the velocity of the boy just before he hit the ground
A coil with magnetic dipole moment 1.5 A-m^2 is rotated initally with its magnetic moment parallel to a uniform magnetic field of 0.4T. what is the change in potential energy of the coil
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