Answer:
79.98
if this is a simple math problem, the (•) signifies multiplication
It is defined that a string that is in its two ends, its fundamental frequency and its subsequent frequencies are the product of the whole depending on the number of the harmonic. In other words, harmonics (higher) define the subsequent frequencies under the functions 2f, 3f, 4f, 5f, etc.
Therefore we have that the higher harmonics would be:
1 x 80 Hz = 80 Hz (1st harmonic and Fundalmental Frequency)
2 x 80Hz = 160Hz (2nd harmonic)
3 x 80Hz = 240Hz (3rd harmonic)
4 x 80Hz = 320Hz (4th harmonic)
5 x 80Hz = 400Hz (5th harmonic)
Hence, the frequencies 160Hz and 240Hz are the two higher harmonics of string with a fundamental frequency of 80Hz.
Let k be the spring constant. Then you have
188=k*21.8
k=188/21.8=8.62,
In the second part you use
m g= k x
x=m g/k= 38/8.62=4.4cm
4.4 cm is the answer
Sound intensity of 1 baby, I = 8*10^-8 W/m^2
The sound heard should be higher by:
10*log (n) where for 5 babies, n = 5. Then
10*log (n) = 10*log (5) ≈ 7 dB
Also give is the reference sound, Io = 1.0*10^-12 W/m^2
Therefore,
Sound intensity, L1 = 10*log (I/I1) = 10*log [(8*10^-8)/(1*10^-12)] ≈ 49 dB
Therefore, total intensity for the five babies is:
Total intensity = 49+7 = 56 dB
Answer:
Explanation:
The way that it will change is by level of liquid in the whatever you are using will rise. This is because of the density of water created by the melting process of ice has a lower amount than the density of liquid in the beaker.