HELP! A man is at home and is on his way to work, which is 8 meters away. He travels 4 meters north at 3 m/s and travels south at 4m/s to his house because he forgets his keys. Then he travels north again at 6m/s and arrives at work. What is his average velocity?

Which notation is used to represent an alpha particle? a. b. c. d.

Against his financial advisor's advice, frank has decided to invest his money in some risky stocks because he once made quite a bit of money in the stock market. his decision illustrates a. the representativeness heuristic b. overconfidence c. the availability heuristic d. confirmation bias select the best answer from the choices provided

Aheavy boy and a lightweight girl are balanced on a massless seesaw. the boy moves backward, increasing his distance from the pivot point. what happens to the seesaw? it is impossible to predict without knowing additional information. the side the boy is sitting on will tilt downward. the side the girl is sitting on will tilt downward. nothing; the seesaw will remain balanced.