A train travels a 400-km route and makes five stops in seven hours. Which equation is used to calculate the train’s average speed? A.
Average speed = Sum of instantaneous speeds

B.
Average speed = Total distance x Total time

C.
Average speed = Total distance + Total time

D.
Average speed = Total distance ÷ Total time

Jason is a body builder. despite being more fit, he weighs more than his brother ryan, who is the same height. which is a possible reason? a. jason has more muscle mass than ryan does. b. jason has more body fat than ryan does. c. jason has more muscle mass and body fat than ryan does d. jason has less body fat than ryan does.

Talia is manufacturing rolls of wire for hanging pictures. she needs a material that is so that it can easily be pulled into wire without breaking.

If you wanted to move an electron from the positive to the negative terminal of the battery, how much work w would you need to do on the electron? enter your answer numerically in joules.