When a light beam emerges from water into air, the average light speed . a. increases
b. decreases
c. remains the same
d. not provided

C

Explanation:

I took the test and got it right :)

wavelength divides in half and speed stays the same.

  the unit of the measure =

explanation:

  the property that is quantified by the energy needed per of material to raise the temperature by one.

  si unit of energy = joule (j)

  si unit of temperature = kelvin (k)

  si unit of mass of material = kilogram (kg)

the property that is quantified by the energy needed per of material to raise the temperature by one is called specific heat.

the unit of specific heat is