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An ideal air conditioner operating on a Carnot cycle absorbs heat Q2 from a house at temperature T2 and discharges Q1 to the outside at temperature T1, consuming electrical energy E. Heat leakage into the house is related to the temperature di erence by a linear relation,
Q = A[T1 T2] ;
where A is a constant. Derive an experssion for T2 in terms of T1, E, and A for continuous operation when the steady state has been reached.
a transformer has N^1 =350 turns and N^2 =2000 turns. If the input voltage is 170V, what voltage is developed across the secondary coil?
A home (volume = 1000 m3) built in 1946 has urea formaldehyde insulation, which outgases into the home at a rate of 5 ng/hr, What is the steady state concentration (C) of formaldehyde in the home
What is decrease in kinetic energy throughout the collision.
A 5 kg ball hangs from the ceiling by a thread. The walls of the room are 5 m apart and they are made of metal, What is the charge on the ball
Two metal spheres, each of mass 20 g and initially at rest, are dropped from a height of 10 m in an evacuated chamber. Find the difference in final speeds of the two spheres
A 1000 kg flat railroad car is rolling to the right at 4.5 m/s. A 60 kg man, is standing on the right end of the cart watching the track in front of the car. What is the final speed of the train car with the mud stuck to it
A baseball pitcher delivers a fastball that crosses the plate with an angle of 5.77 degrees relative to the horizontal and a speed of 87.9 mph. What is the magnitude of the impulse received by the ball
An electron and a positron have masses of 9.11 10-31 kg. They collide and both vanish, determine the energy of the electromagnetic radiation
The starter motor of a car engine draws a current of 200 A from the battery. The copper wire to the motor is 4.90 mm in diameter and 1.2 m long, How much charge passes through the starter motor
Two long straight parallel wires are 19cm apart. Wire A carries 2.0-A current. Wire B's current is5.0A in the same direction, Determine the force per unit length on wire B due to wire A
A brave child decides to grab on to an already spinning merry-go-round. What is the moment of inertia of the merry-go-round with respect to its central axis
200 Ohm, 0.5mA galvanometers are usedfor making a 20 A ammeter and a 120 V voltmeter. Find resistance of the corresponding shunts
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