Explain why electric field lines must be at right angles
If you move along an equipotential line, no work is done since the potential difference is zero along the line. With this, explain why electric field lines must be at right angles to equipotential lines.
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A uniform disk turns at 4.3 around a frictionless spindle. A nonrotating rod, of the same mass as the disk and length equal to the disk's diameter, is dropped onto the freely spinning disk . They then both turn around the spindle with their cente
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What is the tangential acceleration of a bug on the rim of a 11.0 in. diameter disk if the disk moves from rest to an angular speed of 76 rev/min in 5.0 s?
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Two large parallel metal plates are 2.2 cm apart and have charges of equal magnitude but opposite signs on their facing surfaces. Take the potential of the negative plate to be zero. If the potential halfway between the plates is then +5.5 V, what
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After the collision the two pucks fly apart, puck A deflects above the x-axis at a 65-degree angle, puck B deflects below the x-axis at a 37-degree angle. Find the final speed of (a) puck A and (b) puck B.
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