Answer:
z1/z2
Explanation:
we have no quantum effects therefore we can make use of Maxwell Boltzmann distribution in the description of this system.
using the boltzman distribution the probability of finding a particle in energy state

we have
gi to be degeneration of the ith state
ei to be energy of ith state
summation

We have R to be equal to

Question 1: C Question 2: B, Hope this Helps!
It means that they were set earlier therefor they are older.
I got -3.6 m/s but I had to do conservation of momentum for this question. Which involves Newtons third law but with simply that law I do not know how to complete this question. If you would like me to post my work I will though! Sorry