Define wavelength as it relates to the electromagnetic spectrum.

You are driving directly behind a pickup truck, going at the same speed as the truck. a crate falls from the bed of the truck to the road. (a) will your car hit the crate before the crate hits the road if you neither brake nor swerve? (b) during the fall, is the horizontal speed of the crate more than, less than, or the same as that of the truck?

Which of the following forces require physical contact? tension air resistance friction magnetic force applied force

For two variables in a direct proportion, what is the result of doubling one variable?