An atom has 14 protons and 15 neutrons, what is its mass number?

I'm desperate 20 pts.

a wave is travels 78 m in 3.23sec. if that wave has a wavelength of 0.5m then what was its frequency

Would a person wearing dark cloth on a hot day feel cooler or warmer than a person wearing light colored clothing? Explain your answer using what you learned about radiant energy.

An element is made up of

Think of ways you control temperature to influence chemical changes during a typical day. (Hint: cooking, art class)

How do you find the velocity of a wave?

A conservative force acts on a particle. We can conclude: A. The work done by the force on the particle depends only on initial and final position. B. The force must be constant. C. The particle cannot change direction. D.

Which action is caused by gravity? a frost wedging b aeolian bands c mass wasting d glaciation

A light beam is directed parallel to the axis of a hollow cylindrical tube. When the tube contains only air, the light takes 8.72 ns to travel the length of the tube, but when the tube is filled with a transparent jelly, the light takes 1.

Neon, helium, methane, krypton, xenon, hydrogen, and ozone make up & what of the atmosphere

The element in an incandescent light bulb that releases light energy is