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Author Question: The speed of light is 3.0 105 km/s, and it takes 1.3 s for light to travel from the Moon to Earth. ... (Read 202 times)

Destiiny22

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on: Jul 27, 2018
The speed of light is 3.0  105 km/s, and it takes 1.3 s for light to travel from the Moon to Earth. From this information, what is the distance to the Moon?
 
  a. 390,000 km
  b. 230,000 km
  c. 3.9 km
  d. 2.3 km
  e. 4.3  105 km

Question 2

Earth has a radius of about 6400 km, the Sun has a radius of about 7.0105 km, and a rubber ball has a radius of 6.4 cm. If you were to construct a scale model of the solar system using the rubber ball to represent Earth, what is the radius of a ball needed to represent the Sun in your model?
 
  a. 7.0  105 cm
  b. 7.0 cm
  c. 700 cm
  d. 70 cm
  e. 7000 cm


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vkodali

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Reply #1 on: Jul 27, 2018
Answer to Question 1

a

Answer to Question 2

c


Destiiny22

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Reply 2 on: Jul 27, 2018
Gracias!

amynguyen1221

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Reply 3 on: Yesterday
Excellent

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