1. a) Two atomic clocks are synchronized. One is placed on a satellite, which orbits around the earth at high speed for a whole year. The other is placed in a lab and remains at rest, with respect to the earth. You may assume that both clocks can measure time accurately to many significant digits. Imagine that the speed of light was much slower than its actual value. How would the results of this experiment change if the speed of light was only twice the average speed of the satellite? Explain your reasoning, using a calculation. b) Use Max Planck's quantum theory to explain the following behaviour of photoelectrons. i) Low-intensity light does not release any photoelectrons. What will happen if the light is made brighter? Explain your reasoning. ii) Low-intensity light releases photoelectrons. What will happen if the light is made brighter? Explain your reasoning. ii) Low-intensity light does not release any photoelectrons. What will happen if the frequency of the light is gradually increased? Explain your reasoning.

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1. a) Two atomic clocks are synchronized. One is placed on a satellite, which orbits around the earth at high speed for a whole year. The other is placed in a lab and remains at rest, with respect to the earth. You may assume that both clocks can measure time accurately to many significant digits. Imagine that the speed of light was much slower than its actual value. How would the results of this experiment change if the speed of light was only twice the average speed of the satellite? Explain your reasoning, using a calculation.

b) Use Max Planck's quantum theory to explain the following behaviour of photoelectrons.

i) Low-intensity light does not release any photoelectrons. What will happen if the light is made brighter? Explain your reasoning.

ii) Low-intensity light releases photoelectrons. What will happen if the light is made brighter? Explain your reasoning.

ii) Low-intensity light does not release any photoelectrons. What will happen if the frequency of the light is gradually increased? Explain your reasoning.

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