johna

This page lists questions and answers that were posted by visitors named johna.

Questions

The following questions were asked by visitors named johna.

using the scale 1 inch= 8 feet. what is the legnth of 16.5 feet?
15 years ago

Answers

The following answers were posted by visitors named johna.

What will the angle of refraction be for a ray of light passing from air into a sodium chloride crystal, if the angle of incidence is 60.0°? The index of refraction of sodium chloride is 1.53
10 years ago