RontgensWallaby wrote:UTF-8 U+6211 U+662F wrote:Oops, um, said that wrong.
A sound wave of 8 dB travels 1 meter and ends up being 5 dB. What is the volume of the attenuated sound wave after 1.5 meters?
Oh, ok.
- ANS
Hmm, I got
- Possible ANS
RontgensWallaby wrote:UTF-8 U+6211 U+662F wrote:Oops, um, said that wrong.
A sound wave of 8 dB travels 1 meter and ends up being 5 dB. What is the volume of the attenuated sound wave after 1.5 meters?
Oh, ok.
- ANS
RontgensWallaby wrote:Never mind. I used the cube of it. However, after considering my dumb mistake, I still got a different answer...
- Ans
I think that is correct... Tell me if you agree.
UTF-8 U+6211 U+662F wrote:RontgensWallaby wrote:Never mind. I used the cube of it. However, after considering my dumb mistake, I still got a different answer...
- Ans
I think that is correct... Tell me if you agree.
Decibels are already exponential, so it turns more into the inverse proportion law. So:
RontgensWallaby wrote:UTF-8 U+6211 U+662F wrote:RontgensWallaby wrote:Never mind. I used the cube of it. However, after considering my dumb mistake, I still got a different answer...
- Ans
I think that is correct... Tell me if you agree.
Decibels are already exponential, so it turns more into the inverse proportion law. So:
OK, now I think I have it. Decibels are logarithmic, so I believe this is the way you'd do it...
- Yet another possible explanation
I'm aware that my answer sounds really unrealistic but my calculations (I hope) are all correct and 8 dB is barely audible in the first place.
Return to “2015 Question Marathons”
Users browsing this forum: No registered users and 1 guest