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    1) Illuminating a particular metal surface with a helium-neon laser results in the emission of photoelectrons. Will the kinetic energy of the photoelectrons increase if you increase the laser's power? Support your answer. 2) A friend in your physics class tells you that illuminating a surface with any laser will result.
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Chapter 27   Relativity   27.1   Quantitative   1) Two fixed navigation beacons mark the approach lane to a star. The beacons are in line with the star and are  40 Mm apart. A spaceship approaches the star with a relative velocity of  0.30 c and passes the beacons. The passage of the ship between.
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  1) Why do heavy nuclei contain more neutrons than protons? A) Neutrons dilute the electric repulsion of the protons. B) Neutrons are lighter than protons. C) Neutrons are heavier than protons D) Neutrons are radioactive, and so are heavy nuclei. 2) A positron (or antielectron) is made to stop in a sample of matter. Soon.
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11) Three charges form an equilateral triangle with  1.6 cm long sides. What is the electric potential at the point indicated with the dot? A) zero B) 3900 V C) 1900 V D) 5800 V 12) Two parallel circular plates with radius 7.0 mm carrying equal-magnitude surface charge densities of ±3.0 μC/m2 are separated by.
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