() identify the following as electromagnetic (e) or mechanical (m) waves.

sound waves

water waves

radio waves

ultraviolet waves

waves in a wheat field

Which of the following describes something an engineer would probably do first when developing new technology meant to reduce ocean pollution? o a. evaluate the benefits and challenges of using certain chemicals to purify water. o b. research new scientific findings in regard to ocean cleanup. o c. identify the need to reduce ocean pollution. o d. research what has been done in the past to clean up oceanic oil residue.

In a system, when potential energy decreases, then entropy also decreases. true false

If forces acting on an object are unbalanced. true or false