In the diagram above, three beams of light encounter a medium. light ray a is reflected, while light rays b and c are absorbed. how can the medium be described?

a) transparent

b) translucent

c) opaque

d) clear

The pressure proportional to the area a- inversely b- directly c- increase d-decrease

Atemperature inversion can cause a warm air mass to move over a colder air mass. this traps the colder air mass and prevents surface air from rising. this may result in which of these? a) smog b) acid rain c) freezing rain d) a thunderstorm

It's time for santa to deliver his presents. assuming he delivers presents all over the world, he has to travel about 75,000,000 miles. if he travels east to west, he can use the time zones to make christmas day last 31 hours. what speed, in miles per hour, must santa fly to get all of his presents delivered?