Sometimes waves interfere with one another. what type of interference occurs when the crests of one wave and the troughs of another wave overlap? a. overlapping interference b. destructive interference c. constructive interference d. resonant interference

The diagram shows a person using a piece of gym equipment to lift weight which best describe the body in terms of simple machine

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.

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?