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Two point charges are located on the x axis. The First is a charge +Q at x = -a. The second is an unknown charge located at x = +3a. The net electric field these charges produce at the origin has a magnitude of 2kQ/a2. What are the two possible values of the unknown charge?
What is the tension in the rope connecting the two boxes? What is the tension in the rope connecting the first box to the ramp?
question1a puck of mass m1 76.0 g and radius r1 4.40 cm glides across an air table at a speed of 1.50 ms. it makes a
A curling stone slides on ice with a speed of 2.0 m/s and collides inelastically with an identical,stationary curling stone. What fraction of the initial energy is lost in this collision
You have a concave spherical mirror with a 13.3-cm radius of curvature. You place an object on the mirror's axis, 19.7 cm in front of the mirror
your friend gets a at tire while driving up a road with a 35.0 slope. While changing the tire he lets go of the spare and it begins to roll down the hill. How fast (m/s) is the tire moving when it hits the ..
Suppose that an ion source in a mass spectrometer produces doubly ionized gold ions (Au2+), each with a mass of 3.27 × 10-25 kg. evaluate the radius of the path
A diffraction grating with 220 lines per mm is used in an experiment to study the visible spectrum of a gas discharge tube. At what angle will the second order peak occur
Radio astronomers detect electromagnetic radiation at 40.0MHz from an interstellar gas cloud. What is the magnetic field strength inside the gas cloud
A lumberjack (mass = 98 kg) is standing at rest on one end of a floating log (mass = 290 kg) that is also at rest. Determine the velocity of the second log if the lumberjack comes to rest on it
A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. The total mass of the wagon, rider, and rock is 96 kg. Find the speed of the wagon after the rock is thrown
A wave with a frequency of 200Hz is traveling down a 100m long wire whose total mass if 15 kg. The wire is under a tension of 1000 N. What is the length of the wave?
Write down an expression for the efficiency of the air cart bumper in terms of the initial and final kinetic energy of the cart. What defines a collision as elastic or inelastic.
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