Question

If you use spray-on deodorant, you can find out how fast it comes out of the

can if you know the relative pressure inside the can. Supposing a full can of
deodorant has an exit velocity (V) of 42 feet per second, use the formula
below to find the relative pressure inside the can (p) in psi (pounds per square
inch):
Help me please !

Answer 1

A

Explanation:

Givens

v = 42 ft/sec

Formula

v = 7 * (p)^1/2

Solution

42 = 7 * (p)^1/2 Divide by 7

42/7 = 7*(p)^1/2/7

6 = (p)^1/2 Square both sides

6^2 = [(p)^1/2]^2

36 = p

The answer is A