Answer:
The satellite is being accelerated towards the Earth by the gravity of the Earth, but because it's moving sideways too quickly, it keeps missing the Earth. So it keeps falling, but not getting closer. This is what it means to "orbit". In orbit you have two forces balanced, gravity and centripetal acceleration
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The answer is c its always is the same climent there
Active, Dormant, and Extinct
Answer:
C) X=100%; Y=0%
B) X=50%; Y=50%
Explanation:
The oldest rocks on Earth are about four billion years old. When a rock forms, it contains unstable isotope and no daughter isotopes, so every rock will contain 100% parent isotope and 0% daughter isotope.
The half-life of the radioactive isotope Of this particular rock is 5730 years. The half-life is an amount of time needed for half of the parent isotope (50%) to become a daughter isotope. In this case, after 5730 years, half of the initial parent isotope will transform to daughter isotope, which means that after 5730 years, there will be 50-50 of the parent and daughter istotopes presented in the rock. After two half-lives, there will be only 25% of the parent isotope remaining (that’s half of the previous 50% which remained after first half-life), and after three half-lives, there will be only 12,5% of the parent isotope remaining and so on.
