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A 29 kg block is pulled across a horizontal surface with a rope. The block has an acceleration of 3.3 m/s2 and the coefficient of kinetic friction is 0.11. Decide the tension in the rope.
A certain wire has a resistance of 140 Ω. What is the resistance of a second wire, made of the same material, that is 1/3 as long and has 1/5 the diameter? (answer in ohms)
a nearsighted patients far point is 0.612 m from her eyes. she is able to see distant objects in focus when wearing
Two charged bodies separated by a distance d exert an electrical force on each other. The charge on one of the bodies is doubled. The electrical forces on each body now
What is the tangential velocity of a satellite in a circular orbit 300km above the surface of the Earth, How long does the satellite take to complete one orbit
A pop bottle style instrument is played being open at one end closed at the other, if two successive frequencies, 350 Hz and 490 Hz, are produced, what is the fundamental frequency,
A sealed glass bottle at 27°C contains air at atmospheric pressure and has a volume of 30 mL. It is then tossed into an open fire. When the temperature of the air in the bottle reaches 200°C,
Two small metallic spheres, each of mass m = 0.198 g, are suspended as pendulums by light strings of length L as shown in the figure below. The spheres are given the same electric charge of 7.4 nC, and they come to equilibrium when each string is ..
A conducting sphere with an inner insulating sphere inside of it, carries a total charge of 5 nC. The charge within the inner insulating sphere is -5 nC, find the charge on the outer surface of the conducting shell
A helium-neon laser intended for instructional use operates 7.5 mW. Find out the maximum value of the electric field at a point where the cross sectional area of beam is 10 mm.
A 4.0 kg mass is connected by a light cord to a 3.0kg mass ona smooth surface. The pulley rotates about a frictionlessaxle and has a moment of inertia of 0.5kg m^2 and a radius of.30m. Assuming that the cord does not slip on the pulley,
LASIK is a corrective surgical procedure intended to reduce a person's dependency on glasses or contact lenses by actually modifying the shape of the cornea, What is the average intensity during each pulse
When responding to sound, the human eardrum vibrates about its equilibrium position. What is the maximum acceleration of the eardrum
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