What causes an atom to be neutral?

a. equal number of protons and neutrons
b. equal distance between the nucleus and electrons
c. equal number of electrons and protons
d. equal distribution of electrons

According to social exchange theory, altruistic behaviors benefit the individual who performs them.

Pl asaaap ! match the term to the correct description. a type of wave that transfers energy where the particles in the medium move perpendicular to the direction in which the energy is traveling. a type of wave that transfers energy where the particles in the medium move parallel to the direction in which the energy is traveling. movement that is back and forth, like an equal sign = a type of wave that transfers energy where the particles in the medium move in a circle motion while the energy travels left or right. movement that is like a t transfers energy from one location to another 1. wave 2. parallel movement 3. perpendicular movement 4. transverse wave 5. longitudinal wave 6. surface wave

Efficiency is the ratio of to for a system a)power in to power in b)power in to power out c) power out to power out d) power out to power in