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A tennis ball rolls off the edge of a tabletop of height0.710 m above the floor and strikes the floor at a point ahorizontal distance 1.70 m from the edge of the table. You canignore air resistance.Find the magnitude of the initialvelocity.Take the free fall acceleration to beg = 9.80 m/s.
A 100-kg object moves on a level surface with a coefficient of friction of 0.40. If the initial velocity is 15 m/s, how long will it take for it to come to rest
Light visible to humans consists of electromagnetic waves with wavelengths (in air) in the range 400-700 nm (4.0 10-7 m to 7.0 10-7 m). What are the frequencies of electromagnetic waves that are visible
A large grinding wheel in the shape of a solid cylinder of radius 0.330 m is free to rotate on a frictionless, vertical axle. What is the mass of the wheel
A teenager pushes tangentially on a small hand-driven merry-go-round and is able to accelerate it from rest to a frequency of 12 in 9.9. What force is required at the edge
Four charges are placed in a three-dimensional space. The charges have magnitudes 2 nC, -4 nC, 1 nC, and -9 nC. If a Gaussian surface encloses all the charges, what will be the electric flux through that surface?
The current in a 120-V reading lamp is 1.8 A. If the cost of electrical energy is $0.070 per kilowatt-hour, how much does it cost to operate the light for an hour
A plucked guitar string produces a sound wave of frequency 440 Hz. What is the wavelength of the sound wave
At a particular instant of time a light beam traveling in the positive x direction, find the direction of the electric field and explain
q1. ricardo walks 22.0 in a direction 50.0 west of north. jane walks 20.0 in a direction 30.0 south of west. they after
You can think of the work?kinetic energy theorem as a second theory of motion, parallel to Newton's laws in describing how outside influences affect the motion of an object. Use the work-kinetic energy theorem to find the net work that is done on t..
X-rays of wavelength 0.012 nm scatter from a free electron at scattering angle of 45^0. Find the energy and momentum of the recoiled electrons
So I have a 500kg object being lowered by a crane while two people steady it with ropes pulling on either side. what is the tension in the main rope supporting the object
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