Question

An enclosed gas exerts a pressure P on the walls of a container. This pressure is directly proportional to the temperature T of the gas, measured in Kelvin. If the pressure is 7 lb per square inch when the temperature is 420ºK, find the constant of variation.

Answer 1

Do you know what "directly proportional" means?

Answer 2

not exactly

Answer 3

It means that one equals the other multiplied by a constant.

In this case, P is directly proportional to T, so:

\[P = C * T\]

Where C is some constant, which is being called "the constant of variation" in this example. Plug in what you know, and solve for the constant.

Answer 4

ok??

Answer 5

Let me know what you get :)