7. A runner increases his velocity from 0 m/s to 20 mis in 2 What is the runner's average acceleration? 1.0 m/s?
b. 10 m/s2
c20 m/s2
d 40 m/s2
SHOW WORK

Light from a sodium lamp passes through a diffraction grating that has 1000 slits per millimeter. the interference pattern is viewed on a screen 1.000 m behind the grating. the first (m = 1) two bright yellow fringes that are visible are 0.7288 m and 0.7300 m from the central maximum. what are the wavelengths of these two fringes?

Frequency of electromagnetic waves that a radio station is assigned is called

Definition: this is the weighted average of all of the isotopes of an element.