Author Question: Planets with larger orbital radii have longer orbital periods because they both have a longer ... (Read 109 times)

magmichele12 · **on:** Jul 27, 2018

Planets with larger orbital radii have longer orbital periods because they both have a longer distance to travel in each orbit and move more slowly.

Indicate whether the statement is true or false

Question 2

At approximately what temperature can helium fusion occur?

A) 100 billion K
B) 10 million K
C) 100,000 K
D) 1 million K
E) 100 million K