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A) What is the strength of an electric field Ep that will balance the weight of a proton? Express your answer numerically in Newtons per Coulomb to three significant figures.
B) What is the strength of an electric field Ep that will balance the weight of an electron? Express your answer numerically in Newtons per Coulomb to three significant figures
A fluid with resistivity 9.40 ? seeps into the space be¬tween the plates of a 110-pF parallel-plate air capacitor. what is the resistance between the plates
A 3.00 kg block starts from rest at the top of a 30.0 degreeincline and accelerates uniformly down the incline moving 2.00 m in1.50 s. Find the magnitude of the acceleration of the block. Find the coefficient of kinetic friction between the blockand..
An athlete at the gym holds a 2.5 kg steel ball in his hand. His arm is 70 cm long and has a mass of 4-kg. What is the magnitude of the torque about his muster if he holds his arm straight out to his side, parallel to the floor.
An object is placed to the left of a lens, and a real image is formed to the right of the lens. How far from the lens is the object
A catapult with a radial arm 4.19 m long accelerates a ball of mass 19.1 kg through a quarter circle. The ball leaves the apparatus at 41.6 m/s. Find the moment of inertia of the arm and ball
A baseball leaves the batter's bat at 30° above horizontal. With what speed does the ball leave the bat, What is the acceleration of the ball when it reaches maximum height
Suppose a ball player throws a ball at an angle of 55 degrees and a speed of 25 m/s. Next to the ball thrower, What is the distance the ball is thrown
A square, single turn coil 0.20m on a side is placed with its plane perpendicular to a constant magnetic field. An emf of 18mV is induced in the coil winding as the area of the coil decreases at the rate of 0.10m2/S. What is the magnitude of the m..
A jelly donut is dropped from a height of 1m above the big belly of a horizontal couch potato. How high did it rise on its first bounce
Unpolarized light is incident on a system of three polarizers. The second polarizer is oriented at an angle of 30 degrees with repect to the first, what is the intensity of the incident light
If it takes light 3 ns to travel 0.514 m in an optical cable, what is the index of refraction of the cable
An electron is released in a region where there is a varying electric potential. Will the electron move toward the lower potential region or the higher potential region
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