A hydrogen atom has a radius of 2.5 x 10-11 m
Determine the radius of a magnesium atom.

Ten students stand in a circle and are told to make a transverse wave. what best describes the motion of the students? each student bumps the shoulder of his or her neighbor. at the exact time, all students take a step to the right. the students skip clockwise, going in a circular motion. one at a time, each student lifts his or her hands up and then down.

What is the period of a wave traveling 5 m/s if its wavelength is 20 m/s

How does an increase in temperature generally affect the rate of a reaction?