1. the distance between Earth and the Moon is 240,251 miles. The diameter of the
ID: 2075887 • Letter: 1
Question
1. the distance between Earth and the Moon is 240,251 miles. The diameter of the Earth is 7,975 miles. How many Earth diameters would fit between the Earth and the Moon? (units cancel and you just get a number) 2. Show all four steps. Watch sig figs. Show all work to rearrange formula! How long would it take to drive from Earth to the Moon if you drove at 65 mi/hr? State your answer in years. The formula for speed is v d 3. Show all four steps. Watch sig figs. Show all work to rearrange formulal lf you could fly to the Sun on a jet that moves at 774 mi/hr (speed of sound), how long would it take to fly to the sun. The Sun is 9.3 x 10' miles from Earth? State your answer in years. 4. The Sun is 870,000 miles in diameter. The Earth is 7,975 miles in diameter. How many Earth diameters would fit in the Sun's diameter? (units cancel and you just get a number) 5. Mars is 141,600,000 miles from the sun. Convert this distance to astronomical units (AU's) 6. Neptune (last planet in the solar system) is 2,799,000,000 miles from the sun. Convert this distance to AU's. 7. The nearest star to our sun is 4.2 light years away. Light travels at the speed of 186,200 miles per second. Use dimensional analysis to determine the number of miles to the nearest star. (Hint: you will need to know how many seconds in a year) 8. Convert your answer in #7 to AU's.Explanation / Answer
1 mi = 1.0758*10-8AU
Therefore, 2799000000 mi = 2799000000*1.0758*10-8AU = 30.11 AU
From 7 (correct answer) you've got, 4.2 ly = 2.469*1013 mi.
Therefore, 4.2 ly = 2.469*1013 mi * 1.0758*10-8AU = 265615.02 AU
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