It's the first day of summer vacation and to celebrate, you decide to make a big breakfast. You make waffles
from batter, freshly squeezed orange juice, a cheese
omelet, and a strawberry and apple fruit salad.
Identify at least:
-two physical changes. Explain how you know that
they are physical changes.
-two chemical changes. Explain how you know that
they are chemical changes.

What is the relationship between the wavelength of a wave and it's energy?

The intensity of a polarized electromagnetic wave is 12 w/m^2. part a) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=0∘ with the plane of polarization? part b) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=30∘ with the plane of polarization? part c) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=45∘ with the plane of polarization? part d) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=60∘ with the plane of polarization? part e) what will be the intensity after passing through a polarizing filter whose axis makes the angle θ=90∘ with the plane of polarization?

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?