Questions from College Physics


Q: A point charge moves to a region of higher potential and yet

A point charge moves to a region of higher potential and yet the electric potential energy decreases. How is this possible?

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Q: Objects that are at rest relative to Earth’s surface are in circular

Objects that are at rest relative to Earth’s surface are in circular motion due to Earth’s rotation. What is the radial acceleration of a painting hanging in the Pr...

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Q: An electron is accelerated from rest through a potential difference ΔV.

An electron is accelerated from rest through a potential difference ΔV. If the electron reaches a speed of 7.26 × 106 m/s, what is the potential difference? Be sure to include the correct sign. (Does...

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Q: Magnetic induction is the principle behind the operation of mechanical speedometers used

Magnetic induction is the principle behind the operation of mechanical speedometers used in automobiles and bicycles. In the drawing, a simplified version of the speedometer, a metal disk is free to s...

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Q: An electron in an atom has an angular momentum quantum number of

An electron in an atom has an angular momentum quantum number of 2. (a) What is the magnitude of the angular momentum of this electron in terms of ħ? (b) What are the possible values for the z- comp...

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Q: Coherent green light with a wavelength of 520 nm and coherent violet

Coherent green light with a wavelength of 520 nm and coherent violet light with a wavelength of 412 nm are incident on a double slit with slit separation of 0.020 mm. The interference pattern is displ...

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Q: Why are all parts of a conductor at the same potential in

Why are all parts of a conductor at the same potential in electrostatic equilibrium?

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Q: 21. A stone is thrown at an angle of 20°

21. A stone is thrown at an angle of 20° below the horizontal from the top of a cliff. Assume no air resistance. One second after being thrown, the stone's velocity is at angle θ below the horizontal....

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Q: If E = 0 at a single point, then a point

If E = 0 at a single point, then a point charge placed at that point will feel no electric force. What does it mean if the potential is zero at a point? Are there any assumptions behind your answer?

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Q: Objects that are at rest relative to Earth’s surface are in circular

Objects that are at rest relative to Earth’s surface are in circular motion due to Earth’s rotation. What is the radial acceleration of an African baobab tree located at the equator?

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