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The coefficient of performance of a refrigerator is defined as the ratio of heat extracted from the refrigeration compartment to the work required to operate the refrigerator. A certain refrigerator has a coefficient of performance of 2 and requires 571 W of electrical power to operate its compressor. At what rate will this refrigerator deliver heat to the room in which it is operating when it is running?
A cylindrical container of inside diameter 0.6 m is filled with gasoline to a depth of 2 m. What is the mass of the gasoline?
Where is center of mass of the system
a boy goes to market with a average speed of 29 kmh.he returns back half the way he went with a average speed of 40
A stone dropped into a pond generates a travelling wave group approximately 1 m long; the waves within the group have a wavelength of about .1 m Estimate the range of the wavevector spectrum representing the group.
Two objects with masses of 3.70kg and 7.80kg are connected by a light string that passes over a frictionless pulley. Determine the acceleration of each object
A photon with wavelength 4 x 10^-15m converts to a muon/antimuon pair. The rest mass energy of the muon and the antimuon is 105.7 Mev. find the combined kinetic energy of the muon and antimuon
An aircraft weighing 892 N is accelerated at 9.9 m/s/s for 5 seconds, What is the force required to launch the aircraft
An electromagnetic velocity filter (sometimes called a Wien filter) is used in a variety of experiments and other applications, such as electron microscopes, in which we need a beam of charged particles all going at the same speed. Generally the s..
Find the force on the electron in the hydrogen molecule ion for which the potential is represented by the follwoing. V= (-e^2/r1)+(-e^2/r2)
A railroad car of mass 2.5 104 kg moving at 3.50 m/s collides and couples with two coupled railroad cars, What is the speed of the three coupled cars after the collision
You drive west at 70km/h for 24 min , then follow a road that goes 38 degrees south of west, driving at 96 km/h for another 36 min. Find your average velocity for the trip
A 1-kg block on the Moon has a weight of 1.62 N. Given that the Moon's radius is 1740 km, calculate the Moon's mass
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