I have tried to look it up online. I see this equation:
RatioB = log10(P1 / P0)
So I tried log10(1150/15300) = -1.12399 But I don't know what this number is. I am assuming bels. So I would get -11.24 dB, but I don't know how I would turn that into watts.
I tried 10^-11.24 = .000000000005754. I...
Well I initially tried:
1150/15300 = 0.075 to get the ratio. And multiplied that by 130. But I know that can't be it because I don't think the relationship is linear like that. I don't know where to start because I don't understand the relationship between dB, Intensity, Watts and R
Homework Statement
A stereo amplifier is rated at 130W output at 1150Hz. The power output drops by 10.0dB at 15.3kHz. What is the power output in watts at 15.3kHz?
Homework Equations
R=I/Io
Io = 10^-12 w/m2
bel = log(r)
The Attempt at a Solution
I have no idea where to start
Homework Statement
The A string on a violin has a fundamental frequency of 440Hz. The length of the vibrating portion is 32.4cm and has a mass of 0.340g. Under what tension must the string be placed?
Homework Equations
V = Fλ
Vs = √t/μ
The Attempt at a Solution
I plugged in my info to...
Okay why would I square the 2π? Sorry I just want to make sure I am clear. Thank you so much for your help.
f = 1/2π x √s/m
f^2 = 1/(2π)^2 x s/m
10^2 = 1/39.4384 x s/.01
100 = .025355 x s/.01
100 / .025355 = s/.01
3943.995 x .01 = s
39.43995 = s
Well I tried to isolate s, but I can't figure out how.
f = 1.57 x √s/100
10/1.57 = √s/100
6.369 x 100 = √s
636.94267^2 = s
405695.97 but I know this can't be right.