Questions from College Physics


Q: Two small identical conducting spheres are placed with their centers 0.

Two small identical conducting spheres are placed with their centers 0.30 m apart. One is given a charge of 12 x 10-9 C, the other a charge of -18 x 10-9 C. (a) Find the electrostatic force exerted on...

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Q: A uniform electric field of magnitude 375 N/C pointing in

A uniform electric field of magnitude 375 N/C pointing in the positive x - direction acts on an electron, which is initially at rest. After the electron has moved 3.20 cm, what is (a) The work done by...

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Q: On planet Tehar, the free-fall acceleration is the same

On planet Tehar, the free-fall acceleration is the same as that on the Earth, but there is also a strong downward electric field that is uniform close to the planet’s surface. A 2.00-kg ball having a...

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Q: A 0.200-kg aluminum cup contains 800. g

A 0.200-kg aluminum cup contains 800. g of water in thermal equilibrium with the cup at 80.°C. The combination of cup and water is cooled uniformly so that the temperature decreases by 1.5°C per minut...

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Q: An electron is at the origin. (a) Calculate

An electron is at the origin. (a) Calculate the electric potential VA at point A, x = 0.250 cm. (b) Calculate the electric potential VB at point B, x = 0.750 cm. What is the potential difference VB -...

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Q: The two charges in Figure P16.12 are separated by d

The two charges in Figure P16.12 are separated by d = 2.00 cm. Find the electric potential at (a) point A and (b) point B, which is halfway between the charges. Figure P16.12:

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Q: (a) Find the electric potential, taking zero at infinity

(a) Find the electric potential, taking zero at infinity, at the upper right corner (the corner without a charge) of the rectangle in Figure P16.13. (b) Repeat if the 2.00-μC charge is r...

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Q: Three charges are situated at corners of a rectangle as in Figure

Three charges are situated at corners of a rectangle as in Figure P16.13. How much work must an external agent do to move the 8.00-μC charge to infinity? Figure P16.13:

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Q: Two point charges Q1 = +5.00 nC and Q2

Two point charges Q1 = +5.00 nC and Q2 = -3.00 nC are separated by 35.0 cm. (a) What is the electric potential at a point midway between the charges? (b) What is the potential energy of the pair of ch...

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Q: Three identical point charges each of charge q are located at the

Three identical point charges each of charge q are located at the vertices of an equilateral triangle as in Figure P16.16. The distance from the center of the triangle to each vertex is a. (a) Show th...

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