The distance between one point on a compression and the corresponding point on the next compression in a sound wave is called a

Molten iron fills a mould, which has a volume of 200 cm cubed. calculate the volume when the iron cools and solidifies.

At an oceanside nuclear power plant, seawater is used as part of the cooling system. this raises the temperature of the water that is discharged back into the ocean. the amount that the water temperature is raised has a uniform distribution over the interval from 10° to 25° c. what is the standard deviation of the temperature increase?

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?