PLEASE HELP ME ASAP WILL GIVE The four most prestigious World tennis tournaments include: the U. S. Open,
Australian Open, French Open, and Wimbledon
True
False

Astone dropped into a well is heard to strike the water after 8seconds. find the depth of the well if the velocity of sound is 350m/s

Jessie ran 5000 meters from the cops and an average speed of 6 meters / second before he got caught . how long did he run?

30 points - when can a theory be modified if a new type of technology allows for new observations that raise new questions? a. immediately, while the questions about the theory are being asked b. after new hypotheses related to the theory are tested in experiments c. only after the new observations disprove all parts of the theory d. while scientists begin to think about how the theory could improve