Question

Part A: The Sun produces 3.9 ⋅ 1033 ergs of radiant energy per second. How many ergs of radiant energy does the Sun produce in 1.55 ⋅ 107 seconds? Express your answer in scientific notation and show your work. (5 points) Part B: Which is the more reasonable measurement of the distance between the tracks on a CD: 1.6 ⋅ 10−3 mm or 1.6 ⋅ 103 mm? Justify your answer. (5 points)

Answer 1

A. (3.9 x 2.45) x (10^33 x 10^5) 
9.555 x (10^33 x 10^5) 

answer is 9.555 x 10^38 ergs of radiant energy