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2. Light and Distance: (4 points) A. You are on a sailboat at night and you notice that a distant light house happens to have the same brightness as a light on the boat that is 3 meters away from you. If the lamp on top of the lighthouse is a factor of $10^6$ more luminous than the lamp on the boat, calculate the your distance to the lighthouse. Show all calculations and explain your reasoning. B. If an astronomer discovers a new celestial object and desires to determine its distance from Earth, what additional information is required if she is using the same method you devised to solve part A?

          2. Light and Distance: (4 points)
A. You are on a sailboat at night and you notice that a distant light
house happens to have the same brightness as a light on the boat
that is 3 meters away from you. If the lamp on top of the
lighthouse is a factor of $10^6$ more luminous than the lamp on the
boat, calculate the your distance to the lighthouse. Show all
calculations and explain your reasoning.
B. If an astronomer discovers a new celestial object and desires to
determine its distance from Earth, what additional information is
required if she is using the same method you devised to solve
part A?

2. Light and Distance: (4 points)
A. You are on a sailboat at night and you notice that a distant light
house happens to have the same brightness as a light on the boat
that is 3 meters away from you. If the lamp on top of the
lighthouse is a factor of 10^6 more luminous than the lamp on the
boat, calculate the your distance to the lighthouse. Show all
calculations and explain your reasoning.
B. If an astronomer discovers a new celestial object and desires to
determine its distance from Earth, what additional information is
required if she is using the same method you devised to solve
part A?

Added by Robert S.

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