9.2.1 project modeling nuclear reactions physical science

What is special about a dc circuit ?

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?

The number of passengers who arrive at the platform of a subway station for the 10 am train is a random variable with a mean of 120 and a variance of 16. find the lower bound of the probability that there will be between 100 and 140 passengers (round off to second decimal place).