Questions from College Physics


Q: A van de Graaff generator has a metal sphere of radius 15

A van de Graaff generator has a metal sphere of radius 15 cm. To what potential can it be charged before the electric field at its surface exceeds 3.0 × 106 N/C (which is sufficient to break down dry...

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Q: What are the magnitude and direction of the electric field midway between

What are the magnitude and direction of the electric field midway between two point charges, −15 µC and +12 µC, that are 8.0 cm apart?

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Q: An electron traveling horizontally from west to east enters a region where

An electron traveling horizontally from west to east enters a region where a uniform electric field is directed upward. What is the direction of the electric force exerted on the electron once it has...

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Q: During a Compton scattering experiment, an electron that was initially at

During a Compton scattering experiment, an electron that was initially at rest recoils at 180° (i.e., in the direction of motion of the incident x-ray photon). If the recoil electron has a kinetic ene...

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Q: When the string of a guitar is pressed against any fret,

When the string of a guitar is pressed against any fret, the shortened string vibrates at a fundamental frequency 5.95% higher than when the previous fret is pressed. If the whole length of the sectio...

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Q: A 2010 kg elevator moves with a downward acceleration of 1.

A 2010 kg elevator moves with a downward acceleration of 1.50 m/s2. What is the tension in the cable that supports the elevator?

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Q: Rank points A-E in order of the magnitude of the

Rank points A-E in order of the magnitude of the electric field, from largest to smallest.

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Q: What is the electric field at x = d (point P

What is the electric field at x = d (point P)?

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Q: What is the electric field at x = 2d (point S

What is the electric field at x = 2d (point S)?

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Q: Are there any points not on the x-axis where ?

Are there any points not on the x-axis where ? / Explain.

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