What has to be different to allow refraction to occur?

a. the medium

b. the light

c. the wave

d. the speed

An insect is able to walk across the surface of a pond without sinking because of the A. polarity of the water molecules. B. process of evaporation. C. surface tension of the water. D. adhesion of the insect's feet to the surface of the water.

If the fundamental frequency of a violin string is 440 HzHz, what is the frequency of the second harmonic?

A larger truck takes more force to move What law of motion is it?

When an isolated conductor is placed in the vicinity of a positive charge?

Do crabs think fish can fly?

Since all stars begin their lives with the same basic composition, what characteristic most determines how they will differ? 1. location where they are formed 2. time they are formed 3. luminosity they are formed with 4. mass they are formed with 5.

What primarily involves heat transfer by convection?

Each of the following lists two facts. which pair can be used with newton's version of kepler's third law to determine the mass of the sun? each of the following lists two facts.

Which is the temperature at which a solid changes into a liquid?

What is the formula for velocity?