If james and andy both perform 50j of work, but james performs the work faster, who has more power?

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?

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).

Two balls, each with a mass of 0.5 kg, collide on a pool table. is the law of conservation of momentum satisfied in the collision? explain why or why not