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1.) The electric field midway between two equal but opposite point charges is 939N/C , and the distance between the charges is 25.2cm What is the magnitude of the charge on each?
a) Calculate the magnitude of the electric field at one corner of a square 1.43 m on a side if the other three corners are occupied by 2.72×10?6C charges.
b) What is the direction of the electric field?
The rope is inclined at 20.30° above the horizontal, and the sledge moves a distance of 20.3 m on a horizontal surface. The coefficient of kinetic friction between the sledge and surface is 0.500.
If the string is 9.50 m long, has a mass of 55g and is pulled taut with a tension of 9.5 N, how much time does it take for a wave to travel from one end of the string to other.
Compute the Brewster’s angle and angle of refraction.
What is the force acting on the board because of the left support when a diver of mass 63.20 kg stands at the end of the board over the water? Suppose that these forces are vertical.
How much work must be done to bring three electrons. calculate the mass of an ice cube.
A car moves along the x-axis in the positive direction. Find the sign (+,-) of the velocity and acceleration of the car for each situation: 1. The car moves AWAY from the origin and gets FASTER 2.
A 0.810 kg particle has a speed of 2.60 m/s at point A and kinetic energy of 8.80 J at B. What is its speed at B? reply in units of m/s.
The ground state energy of a harmonically oscillating electron is 1.24 eV. How much energy should be added to the electron to move it to the second excited state.
A surface completely surrounds a 4.5 × 10-6 C charge. Find the electric flux through this surface when the surface is (a) a sphere with a radius of 0.66 m, (b) a sphere with a radius of 0.30 m, and (c) a cube with edges that are 0.65 m long.
What is the change in kinetic energy of the puck
When the front of the train passes the worker. A 1500 kg car moving north at 27.0 m/s is struck by a 2165-kg car moving east at 18.0 m/s. The cars are stuck together. How fast and in what direction do they move immediately after the collision.
A 24 rifle bullet travelling 260 buries itself in a 3.10 pendulum hanging on a 2.9 long string, which makes the pendulum swing upward in an arc. Resolve the vertical and horizontal components of the pendulum's displacement.
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