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50J of work are done per cycle on a refrigerator with a coefficient of performance of 3.0.
A) How much heat is extracted from the cold reservoir per cycle? (in J) Express your answer using two significant figures.
B) How much heat is exhausted to the hot reservoir per cycle? (in J) Express your answer using two significant figures.
A board lies on top of 2 uniform cylinders that lie on a fixed plane inclined at an angle theta. what is the acceleration of the board
The penny-farthing is a bicycle that was popular between 1870 and 1890. As the figure shows, this type of bicycle has a large front wheel and a small rear wheel. On a Sunday ride in the park the front wheel (radius = 1.05 m) makes 444 revolutions. Ho..
q1. a space vehicle is coasting at a constant velocity of 28.5 ms in the y direction relative to a space station. the
A balloon is filled with helium at a pressure of 2.4 x 10^5 pa. The balloon is at a temperature of 18 degrees C and has a radius of 0.25 m. By what factor does the radius of the balloon increase
A pilot knows a 7.00 km distance lies between two landmarks A and B on the level ground below. When he is over landmark A, What is the airplanes altitude
question a 150 ohm combination of resistors draws 2 ma of current when connected across a battery. if you now add a 1
A specimen of oil having an initial volume of 620 cm^3 is subjected to a pressure increase of 3.6 MPa, What is the compressibility of the material
In Larry Niven's science-fiction novel Ringworld, a rigid ring of material rotates about a star. The inhabitants of this ring world live on the starlit inner surface of the ring, What is the length of a year on this planet
The angle is 40 degrees and the length is 7.50 m, If the seat weighs 205 N and a 866-N person is sitting in it, find the tension in the inclined cable
In a Young's double-slit experiment, two rays of monochromatic light emerge from the slits and meet at a point on a distant screen, What is the wavelength (in nm) of the monochromatic light
A 200 resistor has a current of 1.5A running through it and is connected in series with a 300 resistor. what is the emf of the battery to which the resistors are connected?
In addition, the snow exerts a retarding force on the sled that points opposite to direction of motion, and has a magnitude of 57 N. Find out the acceleration of the sled and child.
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