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A point charge +2Q is at the origin and a point charge -Q is located along the x-axis at x=d. Find a symbolic expression for the net force on a third point charge +Q located along the y-axis at y= d.
1. a a massless rope is stretched horizontally between two supports that are 3.0 m apart. when an object of weight 3200
A farmer planted a field of Bt 123 corn and wants to estimate the yield in terms of bushels per acre. He counts 22 ears in 1/1000 of an acre. He determines that each ear has about 700 kernels on average. He also knows that the bushel contains abou..
A wooden block with mass 0.33kg rests on a horizontal table, connected to a string that hangs vertically over a friction-less pulley on the table's edge, Find the block's acceleration if k =0.18.
A current of 7.37 A in a solenoid of length 14.8 cm creates a 0.369-T magnetic field at the center of the solenoid. How many turns does this solenoid contain
A ball falls straight down onto a wedge that is sitting on frictionless ice. The ball has a mass of 3.11kg, and the wedge has a mass of 5.39 kg. The ball is moving the speed of v = 4.45m/s when it strikes the wedge, which is initially at rest.
Consider a collision between an alpha particle (mass 4 amu) and an initially stationary oxygen nucleus (mass 16 amu). What was the initial speed of the alpha particle
The incident electron loses energy The incident electron emits an x-ray.
Consider an idealgas at 27 degrees C and1.00 atm pressure. Imaginethe molecules to be, on average, uniformly spaced, What is the length of an edge of each small cube
A rock is dropped off the side of a bridge and hits the water below 5.7 s later. What is the height of the bridge above the water
A thin, circular disk of radius R = 30 cm is oriented in the yz-plane with its center as the origin. Calculate the magnitude of the electric field due to the disk at the point x = 15 cm along the x-axis
Chinook salmon are able to move through water especially fast by jumping out of the water periodically. This behavior is called porpoising. Suppose a salmon swimming in still water jumps out of the water with velocity 6.59 m/s at 41.7° above the h..
how much tension must a cable withstand if it is used to accelerate a 20.0 kg car vertically upward at 0.70 m/s^2
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