2. Question 1:
If someone yells isotropically with
a sound intensity of 0.1 W/m^2,
and you are standing 15m away,
what is the power of the person
yelling?
3. Solution:
Use the equation P=I4(pi)(r^2)
Plug in the intensity, and the
distance you are standing away
from them
Your answer will be: 283 W
4. Question 2:
The last question was simplified
assuming the person was yelling
isotropically, which is not realistic
as they would be facing and yelling
more prominently in one direction
Take some time to consider what
the difference in power would be
with this new knowledge that the
person was not yelling isotropically
5. Hints:
The sound intensity would be
greater if someone yelled in a
fixed direction, thereby decreasing
the power