A gamma ray and a microwave traveling in a

vacuum have the same

(1) frequency (3) speed

(2) period (4) wavelength

What happens when sand and gravel are whirled around by eddies in a river?

What is thE Rquation fo calculating the electrical force between two charges?

One problem for humans living in outer space is that they are apparently weightless. One way around this problem is to design a space station that spins about its center at a constant rate.

How many electrons are in the outer shell of calcium

Two ice skaters, with masses of 50 kg and 75 kg, are at the center of a 50 m - diameter circular rink. The skaters push off against each other and glide to opposite edges of the rink.

What conclusion can be drawn from the statement that an element has high electron affinity, high electronegativity, and a high ionization energy? A) The element is most likely from Group 1A or 2A and in period 1 or 2.

When a cyclist rides past you on the street, this is an example of

Why are galaxies visible

I hockey puck slides across an ice rink more easily than it does across a rough concrete surface why is this

Sodium-22 Sodium-25 # of protons # of neutrons # of electrons