Which statement describes an example of constructive interference in light waves?
A. Light produces colors on a soap bubble.
B. Light passes through an opening such as a slit.
C. Overlapping light waves form a single, brighter wave.
D. Light from one room reaches a nearby darkened room.

Two polarizers are oriented at 70∘∘ to one another. unpolarized light falls on them. what fraction of the light intensity is transmitted?

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

Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?