(a) Suppose that the average person in the population falls asleep in 15 minutes (without
listening to classical music) with o = 6
minutes. State the null and alternative
hypotheses for this study.

The horizontal blue line through the middle of the lens is called the optical axis. as the lamp is moved above or below the axis, keeping the horizontal distance to the center of the lens constant, how does the horizontal distance from the lens to the image change?

Apropagating wave in space with electric and magnetic components. these components oscillate at right angles to each other. it may travel in a vacuum.

For most stars, what does a higher temperature tend to to with? a lower luminosity a higher luminositya red color none of the above