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An ideal gas in a piston is placed in a refrigerator, which removes 525 J of energy from the gas via cooling. The plunger on the piston is pushed down, which does 121 J of work on the gas.
1)What is the net change in the internal energy of the gas in the piston?
The driver of a car slams on the brakes when he sees a tree blocking the road. The car slows uniformly with acceleration of -5.20 m/s2 for 4.05 s, making straight skid marks 61.0 m long, all the way to the tree. With what speed does the car then s..
Calculate the change in potential energy of a 92.8 kg man when he takes an elevator from the first floor to 29th floor, if the distance between floors is 4.41 m.
It compresses the spring, and then is pushed back in the opposite direction by the spring, eventually losing contact with the spring.
Synchronous Generator Problem - The generator outputs 60 Hz power and has a rotational speed of 1200 rpm. How many poles are in the generator
a block of mass m1 2.00 kg on a frictionless inclined plane of angle 32.0deg is connected by a cord over a massless
John is concerned that the compressor appears to be much too hot to touch, a sign perhaps that the compressor requires maintenance. John knows that the compressor consumes 26 Btu/lbm of throughput and that less than 2% of the electricity that the com..
Rank these designs in order of level of internal validity, from lowest to highest: pre-experimental design true experimental design quasi-experimental design
A thin 1.7-m metal rod sustanins a longitudinal standing wave with vibration antinodes at each end of the rod. There are no other antinodes. What is the frequency of the rod's vibration
What is magnitude of the difference in frequency
A fisherman sees rays of light apparently diverging from a point P' on a fish (see figure below). The fish appears to be at y = 1.1 m below the surface. What is its actual depth? (Take θ = 41.2°.)
two circular current loops are located at z r2 and z -r2 parallel to the xy-plane and centered at the z-axis. each
The drawing shows two situations in which charges are placed onthe x and y axes. They areall located at the same distance of 6.6 cm from the origin O. Foreach of the situations in the drawing, determine the magnitude ofthe net electric field at the o..
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