Alight wave moves from a medium where particles of matter are closely packed to a medium made of very little matter. how do you expect the light wave to travel differently?

the light will change wavelength and lose energy.

the wavelength will change along with the frequency.

the wave will move faster, increasing its speed.

  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