- #1

mimi.janson

- 80

- 0

**easy question, can't get the right result but have all fomulars!**

## Homework Statement

hi everyone i have a question i need to solve, and i aready found out what i need to do, but i seem to be getting a too big result and i don't get why,so i would appreciate it if someone would explain what i was doing wrong.

it is explained that the sound intensity (I) is defined as the sound power (P) per unit A (4*∏*r

^{2})

Something is placed in point A and the sound it sends 10 meters to point B the volume of sound is 110 deciBell. so i had to find the sound power (P)

## Homework Equations

I have this following formula i can use

I=P/(4*∏*r

^{2})

## The Attempt at a Solution

so i thought i would be able to solve it by isolating P and tried this way

110=P/(4*∏*10

^{2})

110=P/1256,63

110*1256,63=(P/1256,63)*1256,63

138230,07 Watt=P

But it seems like it is too big of a result ?

what do you guys think ? and thanks for everyone who would try to help me out