If the output work of a simple machine is than the input work, the machine is said to have less than 100% efficiency.

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.

Which feature indicates that mars resides in the inner region of the solar system

One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form