Which of the following is not a type of disease that gymnastics can help prevent that is mentioned in the article? options: A. Heart disease
B. Hereditary diseases
C. Obesity
D. Diabetes

From center station, a train departs every 30 minutes on the fast line and a train departs every 50 minutes on the state line. if two trains depart from center station at 8: 00 a.m., one on each of the two lines, what is the next time that two trains, one on each line, will depart at the same time?

Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?

Iron is a transition metal with multiple oxidation numbers. (answer the following) a. what is the iron (ii) ion? how does it differ from the iron (iii) ion? b. if iron were to bond with oxygen, predict the formula for each oxidation number of iron. c. how would each formula be named?