Question

plz explain it......​

Answer 1

Answer: The answer is (2).

Explanation:

This is a simple application of the root mean square speed formula. The vertical axis N/N0 stands for the ratio of the original sample of radioactive material that is left, but that is not important. The horizontal axis shows velocity, and X is the highest point on the graph. This means that the highest percentage of molecules sampled are at point X. The root mean square formula is the square root of the square of the average of the speeds of molecules in a sample, which generally means the most common speed present in the sample. Aside from individually measuring the speed of each molecule, the root mean square speed can also be determined through the formula $\sqrt{3RT/M}$, which is the formula given in (2).