What happens to gas in a ball that's been placed in a hot climate

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).

Current from a charged capacitor lights a bulb. as time goes on the brightness of the

Which type of energy is transferred by convection currents?