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the inside and outside temperature of a carnot refrigerator are 10*C and 25*C, respectively. the refrigerator takes in 200J of energy from a cold reservoir in each cycle, find the work required in each cycle.
The ball thrower, who has a mass of 100 kg, can throw a 500 g ball with a speed of 10 m/s. What constant force must the athlete exert on the ball
What is the change in entropy for the system. How much force must be applied to climb the hill at the same speed and same air resistance.
A 0.170-A current is charging a capacitor that has circular plates 15.0 cm in radius. The plate separation is 4.00 mm. What is the time rate of increase of electric field between the plates
A 2.00-mol sample of hydrogen gas is heated at constant pressure from 302 K to 414 K. Calculate the increase in its internal energy
A helicopter is ascending vertically with a speed of 5.20m/s. at a high of 125m above the earth, a package i dropped from a window. How much time does it take for the package to reach the ground? (Hint: the package's initial speed equals helicopte..
A shell is shot with an initial velocity v0 of 44 m/s, at an angle of ?0 = 60° with the horizontal. How far from the gun does the other fragment land
A high-tension power line composed of aluminum wire with cross-section area 24 x10?6 m2 carries a current of 1100 A. What is the power loss over 50 km of wire
A house has a floor area of 113 m2 and an outside wall that has an area of 26 m2. The earth's magnetic field here has a horizontal component of 3.0 multiplied by 10-5 T that points due north and the vertical component of 4.9 multiplied by 10-5 T p..
In Europe, the standard voltage is 240 V (rms), AC, and 50 cycles/s. Suppose you take your 5.00 W electric razor to Rome and plug it into the receptacle, What is the resistance of your razor
A 2.6-kg cart is rolling along a frictionless, horizontal track towards a 1.7-kg cart that is held initially at rest. What is the total momentum of the system of the two carts
If 0.040kg of ice at 0 C is added to 0.390kg of water at 30 C in a 0.130-kg aluminum calorimeter cup
All distant galaxies are moving away from us. Describe why this does not imply that we are at the center of universe.
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