Answer: 1) Ganymede, 2) lo, 3) Europa, 4) Tidal heating, 5) Callisto, 6) orbital resonance
Explanation:
I’m not 100% sure but I think it’s C. Waxing Crescent
Answer:
After three half-lives, it is 7:1
Explanation:
- The rate at which the decay of the radioactive isotope is said to be half-life and is represented as the half-life of the atoms and the matter to disintegrate itself.
- The two radioactive isotopes are K 40 and Ar 40. After the K-Ar dating, they contain minerals such as the clay mica and the temphra minerals and Half-life of the K 40 is 1.3 more than 100,000 years i.e 10x9 years for Ar 40.
- <u>Thus the K 40 has to divide as three half-lives have passed if the ratio of argon to potassium atoms is 7:1. At the end of one half-life, the ratio of the number of argon to potassium atoms is 1:1. and two half lives its 3:1 thus after the third half-life it becomes as 7:1.</u>
Answer:
The British believed that if Americans moved west over the mountains, it would be too challenging to regulate trade and taxes, and that their resources would be spread too thin. In addition, there were many people already living on the land in the Ohio Valley. There were other people settled in the Ohio Valley as well.
