several electrons are placed on an irregularly shaped conducting material which

Question

several electrons are placed on an irregularly shaped conducting material which of the following is true Long Axis 9) Breaking a bar magnet in half will produce a: A single north magnetic monopole b. a. A single south magnetic monopole c. Two bar magnets d. Two pieces of non-magnetic material 10) When light refracts from one medium to another, which of the following is truei The speed of light changes b. a. The frequency of light changes The wavelength of light remains the same c. d. None of the three quantities: speed, wavelength or frequency change 11) The image of an object in a plane mirror: a. b. c. d. Is always smaller than the object Is always the same size as the object Is always larger than the object Can be larger, smaller, or same size as the object, depending on the distance between the object and the mirror 12) Which of the following is a statement of the third law of thermodynamics? The entropy of the universe cannot decrease. The entropy of the universe cannot increase. a. b.

Explanation / Answer

9. (C)

10. (A)

11. (B)

12. (A)

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