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A system does 100 J of work to its surroundings and gains 50 J of heat in the process. Calculate the change in the internal energy of the system. Determine if the internal energy is increased or decreased during the process.
A transformer operating from 79 V (rms supplies a 18.3 V lighting system for a garden. Find the equivalent resistance of the system
Two cars have a head on collision. Both were traveling at 42m/s toward each other. Car A has a mass of 722 KG. Car B has a mass of 848KG. After impact, car A is moving backward at 2 m/s. What is car B's velocity after impact.
series RACA socket has some resistance and inductors and capacitors frequency is 50Hz and generator is 100 volts. Determine the inductive reactance
At the low point in its swing, a pendulum bob with a mass of 1 kg has a velocity of 8 m/s. What is its kinetic energy at the low point
A 12 gram bullet is fired into a 100 gram wooden block initially at rest on a horizontal surface. Find the speed of the block and bullet immediately after impact
a 6000 kg struck moving at 75 km/hr hits a stopped 3000kg car. they lock bumpers and skip to a stop. find the speed of the truck and car system
A high-speed photograph of a club hitting a golf ball is shown in the figure below. The club was in contact with a ball, initially at rest, for about 0.0038 s. If the ball has a mass of 55 g and leaves the head of the club with a speed of 2.5 102 ft/..
You are standing on the top of a tall cliff and shoot an arrow from a height of 30.0 m at 25.0 m/s and an initial angle of 32.0° above the horizontal.
Babies recovering from surgery need to be fed milk from an open syringe through a nasogastric tube, a slender tube that passes in one nostril and down into their stomach
A spherical surfacecompletely surrounds a collection of charges. Find the electricflux through the surface if the collection consists of (a) a single3.5 µC charge, (b) a single -2.3µC charge, and (c) both of the charges in(a) and (b).
Suppose both skaters are initially moving v, but one has mass m and the other 2m. What point do they rotate about after they meet? What is the linear velocity of this point? What is the angular velocity of the system
A fan at a rock concert is 35m from the stage, where sound intensity level is 125 dB. Her eardrums have a diameter of 8.07mm. How much energy is transferred to each eardrum in one second? (Distance from the speaker to the edge of the stage is 1 m...
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