The two lasting legacies are the language latin, and greek.
Answer:
B and C
Explanation:
B. In a given rock sample, the amount of Silicon-32 isotopes gets divided in half about every 170yrs.
This is the concept of half-life. Half life is the time take for half of a radioactive isotope to disintegrate. The shorter the half life the faster the isotope disintegrates.
From the question, we were told that it would take 170yrs for half of the isotope of Silicon to disintegrate to Phosphorus. This is the half life.
C. The half life can be used to determine the amount of Si-32 that has decayed from the time closure temperature was reached.
The closure temperature is very important in radioactivity. It is the temperature at which a system has cooled and there is no resulting disintegration of parent and daughter isotopes.
From first order kinetics, we know that the rate at which radioactive elements decay at any time is directly proportional to the number of radioactive atoms present. A knowledge of the half life helps to figure out the number of atoms that has decayed in time.
<span>The region of the U.S. is most likely to have a population of predominantly Sewdish, Norwegian, Danish, German and Polish backgrounds is the Midwest.</span>
If such an earthquake was to strike L.A., the epicenter and the magnitude would be <u>Los Angeles</u><u> </u>and <u>7.8 </u><u>o</u>n the Richter scale respectively.
<h3>What is the epicenter and magnitude of an earthquake?</h3>
The epicenter of an earthquake is the place on the surface of the Earth where the earthquake is first detected which in this case is Los Angeles.
The magnitude is measured on the Richter Scale and in this case is 7.8 on that same scale which means it was quite a strong quake.
Find out more on the epicenter at brainly.com/question/1969968.
