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3.How much energy would a single photon have if its associated wavelength was 470 nm?

4. How much energy would a single photon have if its associated frequency was 103.3 MHz?

5. The surface temperature of a certain planet is about 59 K. What is this in Celsius and in Fahrenheit degrees?

6. What is the surface temperature of a star that gives off most of its electromagnetic radiation at a wavelength of 470 nm?

7. If the star in Question 6 suddenly became three times as hot as it is now, at what wavelength would the star start giving off the majority of its electromagnetic radiation?

8. Calculate the luminosity of a star with a surface temperature of 6000 K and a radius of 1.5 x 106 km.

9. Calculate the luminosity of the star in Question 8 if its radius tripled but its surface temperature remained constant.

10. Calculate the luminosity of the star in Question 8 if its surface temperature tripled but its radius remained constant.

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