A bar 100 cm in length is subjected to an axial pull, such that the maximum stress is equal to 10^5 N! m^2. It's area of cross section is a bit 2 cm^2 over a length of the road 95 cm and for the middle 5 cm length it is only 1 cm^2. if E is a 200 GN/m^2,calculate the strain energy in the bar.

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).

You want to lose weight and have been trying to decide which type of fad diet is best for you. you ask your doctor, who responds that a. fad diets are a temporary fix but generally don't have any side effects b. fad diets can be used several times a year to maintain a healthy weight c. fad diets can be risky for your health and, in the long run, do not work d. fad diets should never be used one right after the other; there should be a break between them select the best answer from the choices provided. a b c d

What happens to an isotope during radioactive decay?