You see a quarter at the bottom of a fountain. using what you know about light waves and refraction, predict what will happen when you reach down to get it in the position you perceive it to be. how does this relate to how rainbows are produced?

When you reach down to the position you thought it to be, you will realize that the quarter is much deeper than it appears to be.

Explanation:

Refraction is the change in the speed or frequency of light at the boundary between two media. This causes the light rays to bend. Refraction in water causes objects to appear closer to the top of the water than they actually are. When you see the quarter from above, its position is called its APPARENT DEPTH. The depth at which the quarter is actually found is called its REAL DEPTH. The difference between the two is the lateral displacement of the quarter due to refraction. The real depth is much deeper than the apparent depth.

Refraction of light in water droplets in the atmosphere causes various components of visible light to move at different speeds. This is similar to what happens in prisms. Each water drop separates the components of white light to form a spectrum.

c is the answer because when something is left after something evaporates that shows the chemical change.

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.