What is the acceleration of a ball rolling 12 m/s to a stop in 3 seconds A. -4 m/s^2
B. -0.25 m/s^2
C. 0.25 m/s^2
D. 4 m/s^2

Lymphocytes known as blastocysts make antibodies that fight infection. select the best answer from the choices provided t f

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

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge, at the position of the second charge, change if the second charge is doubled? a. the field does not change b. the field strength decreases by half. c. the field strength doubles d. the field strength quadruples