quiz 1

what is LASER?

• LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIO

• LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION

• LIGHT AMPLIFICATION BY STIMULATED EMISSION RAY

• LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RED

ATOMS ARE EXCITED FROM GROUND STATE TO HIGHER STATE BASED ON THE PRINCIPLE OF ................

What happens when two forces act in the same direction?

• They cancel each other out.

• The stronger one prevails.

• Their strengths are added.

• Their sum divided by two is the total force.

Tags

NGSS.MS-PS2-2

Peanut ran 50 meters in 10 seconds.  What was Peanut's average speed?

• 2 m/s
• 5 km/h
• 5 m/s
• 5 m/s North

what is inelastic collision?

• conserved energy

• energy is not conserved