Which type of wave is classified as electromagnetic? a. sound b. light c. water d. seismic?

Road users moving into your lane, brake lights, and abrupt changes in road surface are a. rare at night b. indicators of potential hazards c. not worth worrying about before you reach them d. no problem for experienced drivers

If a simple machine reduces the strength of a force, what must be increased?

What is the measure of how much matter is in an object and that can be measured using a balance? a. height b. volume c. weight d. mass