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Question1
An electron is a subatomic particle (m = 9.11 × 10^-31 kg) that is question to electric forces. An electron moving in the +x direction accelerates from an original velocity of +5.40 × 10^5 m/s to a final velocity of +2.10 × 10^6 m/s whereas travelling a distance of 0.038 m. The electron's acceleration is due to two electric forces parallel to the x axis: and, that points in the -x direction. Find out the magnitudes of
(a) Net force acting on the electron and
(b) Electric force.
Question2
An unknown force pushes a 17 kilogram block across a smooth (frictionless) floor. Three seconds after the force is first applied to block, the block is moving with a speed of 6 meters per second. What is magnitude of the unknown force?
A sphere of radius R is uniformly charged to a total charge of Q. It is made to spin about an axis that passes through its center with an angular speed ω. Find the magnitude of the resulting magnetic field at the center of the sphere.
A resistor is in the shape of a cube, with each side of resistance R . Find the equivalent resistance between any two of its adjacent corners.
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