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An electron is placed in a uniform electric field of strength 210 N/C. If the electron is at rest at the origin of a coordinate system at t = 0 and the electric field is in the positive x-direction, what are the x- and y- coordinates of the electron at t = 1.64 ns?
The bullet remains in the block, and after the impact the block lands d = 2.2 m from the bottom of the table. Identify the initial speed of the bullet.
A boulder has 300J of potential energy sitting on the edge of cliff. What is the boulder's kinetic energy as it hits the ground.
Three point masses each of mass m are connected by two thin rods each of mass M and length L. The central mass is at an origin and the z-axis is directed out of the page.
An observer, whose eyes are 1.77 m above the ground, is standing 28.0 m away from a tree. The ground is level, and the tree is growing perpendicular to it. The observer's line of sight with treetop makes an angle of 22.0° above the horizontal. How..
A neutral conductor completely encloses a hole inside of it. you observe that the outer surface of this conductor carries a charge of -12 microC. A) can you conclude that there is a charge inside the hole? b) how much charge is on the inner surfac..
A steel band exerts a horizontal force of 76N on a tooth at point B. What is the torque on the root of the tooth about point A.
A golf ball strikes a hard, smooth floor at an angle of θ = 31.6°, rebounds at the same angle. The mass of the ball is 0.043 kg, and its speed is 45m/s just before and after striking the floor. What is the magnitude of impulse applied to the golf bal..
The rocket fires for 10 mins , after that the asteroid is moving at 30 degrees to its original path at the speed of 18 km/h/ Find its average acceleration.
If a curve with a radius of 85 m is properly banked for a car travelling 68 km/h, what must be the coefficient of static friction for a car not to skid when travelling at 97 km/h.
If, on other hand, she first kicks it to player 2, who then kicks it into the net, the ball undergoes two successive displacements, y and x. What are the magnitude and direction of x and y.
An object with a net charge of 44 µC is placed in a uniform electric ?eld of 554 N/C, directed vertically. The acceleration of gravity is 9.81 m/s^2. What is the mass of this object if it ?oats in this electric ?eld?
Find the eight ball's speed after the colision. Parallel rays of green mercury light with a wavelength of 546 nm pass through a slit with a width of 0.437 mm. What is distance from the central maximum to the first minimum on a screen 1.75 mm away f..
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