Charge carriers in a metal are electrons rather than protons because electrons are

A) negative.
B) smaller.
C) loosely bound.
D) none of the above


Answer: C

Physics & Space Science

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An effective theory must

A) have been proven. B) must have been around for centuries or longer. C) be continuously tested. D) include mathematical formulae.

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Two equal positive charges are held in place at a fixed distance

If you put a third positive charge midway between these two charges, its electrical potential energy of the system (relative to infinity) is zero because the electrical forces on the third charge due to the two fixed charges just balance each other. A) True B) False

Physics & Space Science

The lithosphere consists of

a. all of the crust's depth. b. all of the crust's depth and part of the mantle's depth. c. part of the crust's depth. d. all of the crust's depth and all of the mantle's depth.

Physics & Space Science

A sample of an ideal gas has a volume of 0.0100 a pressure of Pa, and a temperature of 300 K. What is the number of moles in the sample of gas?

A. 0.302 B. 0.330 C. 0.375 D. 0.401 E. 0.502

Physics & Space Science