The intensity of a sunspot is found to be 3 times smaller than ...

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The intensity of a sunspot is found to be 3 times smaller than the intensity emitted by the solar surface. What is the approximate temperature of this sunspot if the temperature of the solar surface is 5800 K?
 
  a. 4400 K
  b. 470,000 K
  c. 1900 K
  d. 7600 K
  e. 1400 K

Question 2

Jupiter orbits the Sun and follows which laws? Choose the best answer. I. Kepler's first II. Kepler's second III. Kepler's third IV. Newton's first V. Newton's second VI. Newton's third VII. Newton's law of gravitation
 
  a. I, II, III, V, VI b. II, IV, VI, VII
  c. I, II, III, IV, V, VII d. I, II, IV, V, VI, VII

[ju]

Answer to Question 1

a

Answer to Question 2

c

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Gracias!

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