How much force is required to keep a 2.0kg stone from falling?

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).

What is the measure of how much matter is in an object and that can be measured using a balance? a. height b. volume c. weight d. mass

What happens when you slowly pulled the carboard?