QUESTION 1 (3 points): a) Given that the Sun is 150,000,000 km from Earth, how long does it take light to travel from the Earth to the Sun. Give your answer in minutes (min) b) The Cassini spacecraft, currently in orbit about Saturn, sends its data to Earth using radio waves. Assume that Saturn is at its closest approach to Earth. How long does it take the signals to reach Earth from Saturn? Give your answer it minutes (min). QUESTION 2 (3 points): A regular incandescent light bulb radiates most strongly at a wavelength of 3000 nm. a) How hot is the filament? Give your answer in Kelvins (K) b) In which part of the spectrum does it emit the most radiation: visible, or infrared (heat)? QUESTION 3 (6 points): Use the orbit of Ganymede to calculate the mass of Jupiter in kilograms. You will need to use the size of the orbit and orbital period, which can be found in Table 8.1 on page 216 of the 6th edition of the text. (Any other text boox will have a table of appendix with this information. Remember that the units to calculate the mass have to be in metres, and seconds if you want to get the mass in kilograms.