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An ideal air conditioner operating on a Carnot cycle absorbes heat Q2 from a house at temperature T2 and discahrges Q1 to the outside at temperature T1, consumng elecrical energy E. Heal leakage into the house is related to the temperature difference by a linear relation, Q=A[T1-T2], when A is a constant. Derive an expression for T2 in terms of T1, A and E for continuous operation when the steady state has been reached.
Two small identical conducting spheres are placed with their centers 0.70 m apart. One is given a charge of 1.2 x 10^-8 C, Find the electrostatic force exerted on one sphere by the other
A solar collector is placed in direct sunlight where it absorbs energy at the rate of 880 J/s for each square meter of its surface. What equilibrium temperature does the collector reach
A friend of yours is loudly singing a single note at 400 Hz as driving toward you at 250 m/s on a day when the speed of sound is 340 m/s
An experimental airplane is flying northwest from Nashville, at an altitude of 18,000 ft. Determine the lift
A sample containing beryllium (atomic mass 9 u), aluminum (27 u), and an unknown element is placed in a mass spectrometer. What is the mass of the unknown element
Driving in your car with a constant speed of 13 m/s, you encounter a bump in the road that has a circular cross section, as indicated in the figure. If the radius of curvature of the bump is r = 29 m, find the apparent weight of a 59-kg person in you..
A cylindrical tank with a large diameter is filled with water to a depth D = 0.310 m. What is the rate at which water flows out, in cubic meters per second
What is the fractional change in the period of the pendulum.
A dish antenna with a diameter of 22.8 m receives (at normal incidence) a radio signal from a distant source, find the intensity of the radiation received by the antenna
A wire coil is initially oriented so that its plane is perpendicular to a magnetic field of 0.68 T pointing to the left. what is the diameter of the coil
A large spool in an electrician's workshop has 80 m of insulation-coated wire coiled around it. What is the length of wire remaining on the spool
A string has a linear density of 5.7 x 10-3 kg/m and is under a tension of 400 N. The string is 1.4 m long, determine frequency of the traveling waves that make up the standing wave
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