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1) The work from the engine goes into an ideal refrigerator which extracts 5900.0 J of heat from its cold reservoir. Find the coefficient of performance of the ideal refrigerator.
A +20 nC point charge is placed on the x axis at x =2.0 m, What is the direction of the electric field at the origin
A fisherman wants to know the mass of a trout he just caught but does not have scales. What is the mass of the fish
Consider a resistor (R=1000 kΩ) and a capacitor (C=1mF) connected in series. Find the maximum charge on the capacitor
calculate the work done on a charge Q. If an automobile rounds this curve at 30 {rm m/s}, what is the least coefficient of static friction between tires and road needed to prevent skidding.
A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 24.0° below the horizontal, Find the length of time the car is in the air
A model airplane with mass of 0.754 kg is tethered by a wire so that it flies in a circle 29.5m in radius. The airplane engine provides a net thrust of 0.796 N perpendicular to tethering wire.
An induction cooktop generates an alternating magnetic field B(t)=(0.25 T)cos??t. Calculate the maximum emf induced in a pan modeled as a ring of radius 10 cm
Examining your image in a convex mirror whose radius of curvature is 24.8cm , you stand with the tip of your nose 10.2cm from the surface of the mirror. Where is the image of your nose located
Two particles are created in a high-energy accelerator and move off in opposite directions. What is the speed of the second particle, as measured in the laboratory
A block of ice at 0 degrees C, whose mass is initially 30.0 kg, slides along a horizontal surface, starting at a speed of 5.56 m/s and finally coming to rest after travelling 21.8 m. figure out the mass of ice melted (in grams) as a result of frictio..
If the pump outlet is blocked and the handle pushed until internal length of the pump cylinder is 21, by how much does the air temperature rise? Suppose that no heat is lost.
One way to measure on another planet or moon by remote sensing is to measure how long it takes an object to fall a given distance. A lander vehicle on a distant planet records the fact that it takes 3.17 for a ball to fall freely 11.26.
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