Match the following steps in the scientific method to their definitions.
1. research the problem
use reliable sources, talk to experts, and take notes
2. organize data
create charts or graphs to display the results
3. design an experiment
come up with a question that can be answered
4. hypothesis
set up a procedure for testing your ideas; include variables and controls
5. choose a problem
must be testable and falsifiable

Two identical 82 mg dust particles very far apart (pee 0) are moving directly toward each other at a speed of 3698 m/s. the charge on each is-719 ? c. determine how close they will get to each other. let k = 9x109 n-m2/c2 & ignore gravity.

With the simplified model of the eye, what corrective lens (specified by focal length as measured in air) would be needed to enable a person underwater to focus an infinitely distant object? (be careful-the focal length of a lens underwater is not the same as in air! assume that the corrective lens has a refractive index of 1.62 and that the lens is used in eyeglasses, not goggles, so there is water on both sides of the lens. assume that the eyeglasses are 1.90

Which of the following is the phase that results when the moon is on the opposite side of the earth from the sun? a. quarter moon b. crescent moon c. new moon d. full moon