Rahul is carrying a load of 80 kg along to 200 meters in 5 minutes. But the same load is carried by Reena for the same distance in 4 minutes. Who has more
power? Also show by calculation​

Which accounts for an increase in the temperature of a gas that is kept a constant volume

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).

The experiment done in lab is repeated, using a ball that has unknown mass m. you plot your data in the form of f 2 versus m/l, with f in rev/s, m in kg, and l in m. your data falls close to a straight line that has slope 3.19 m/(kg · s2). use g = 9.80 m/s2 and calculate the mass m of the ball.