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An infinitely wide and an infinitely thin insulating plane has a uniform surface charge density of 3.5 nC/m^2. What are the strength and direction of the electric field at:
a. 0.1 mm above the centre of the top surface of the plate.?
b. 0.1 mm below the centre of the bottom of the top surface of the plate?
A light bulb is placed 22.3 cm in front of a concave mirror. Calculate the focal length of the concave mirror
the diameter of the vessel is 5.6 mm. In a 0.60-T magnetic field illustrate what is the magnitude of the voltage that is measured with the electrodes in the drawing?
A block is on a rough horizontal surface. A horizontal force of magnitude 3 N is applied to the block. What is the frictional force exerted on the block
Two different wavelengths of light are incident on a diffraction grating. One wavelength is513nm and the other is unknown. If the3rdorder of the unknown wavelength appears at the same position as the2ndorder of the 513 nm light, what is the value of ..
On the floor1.5 m in front of the mirror is a small table, 0.75 mhigh. Illustrate what is the minimum height the mirror must have foryou to be able to see the top of the table in themirror?
A ball is thrown straight upward with a velocity of 39m/s. How much time passes before the ball strikes the ground
A metal ball of mass 0.22 kg with initial temperature of 95ºC is dropped into a container of 0.50 kg of water at 20ºC. what is the specific heat of the metal
A 0.470 kg pendulum bob passes through the lowest part of itspath at a speed of 3.80 m/s. What is the tension in the pendulum cable when the pendulumreaches its highest point
A cart of a mass 300 kg is pushed up a track at an angle of44 degrees from the bottom to a position that is 30m higher thanthe bottom in a time of 25 seconds. What is the velocity at the bottom
when a mass of 180g is attached to a vertical to a vertical spring and lowered to its equilibrium position, it is found that the spring extends 12cm. what is the period of the resulting oscillations
A child sit down in a seat on a Ferris wheel. Suppose the wheel has a radius of 70m, By this time, what angle has the child rotated through
In a two-slit interference experiment, with the sits 0.041 mm apart and screen at a distance 75 cm, What is the wave length of the light
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