- #1
mimi.janson
- 80
- 0
easy question, can't get the right result but have all fomulars!
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*∏*r2)
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)
I have this following formula i can use
I=P/(4*∏*r2)
so i thought i would be able to solve it by isolating P and tried this way
110=P/(4*∏*102)
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
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*∏*r2)
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*∏*r2)
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*∏*102)
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