In a certain region of space, a uniform electric field is in the x direction. A particle with negative charge is carried from x = 20.0 cm to x = 60.0 cm. The electric potential energy of the charge-field system:

1.increases.
2.remains constant.
3.decreases.
4.changes unpredictably.


1

Physics & Space Science

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What are the shortest wavelength X-rays produced by a 50,000-V X-ray tube?

What will be an ideal response?

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The oldest rocks that have been dated by radioactivity are approximately

A) 2 million years old. B) 200 million years old. C) 4 billion years old. D) 10 billion years old.

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In a partially stabilized zirconia-calcia chemical sensor, the electrical conductivity is due primarily to:

(a) Electron flow in the conduction band (b) Hole diffusion in the valence band (c) Oxygen ion diffusion (d) Zirconium ion diffusion

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