Its acceleration would be handled as negative.
Answer:
Part a)
Frequency of sound is 130 Hz
Part b)
Wavelength of the sound is 2.65 m
Explanation:
Part a)
Frequency of source of the sound is same as the frequency of the sound
Here we know that motion of hammer is back and fourth with frequency
f = 130 cycles per second
so frequency of sound is same as frequency of hammer motion
so we have
![f_{sound} = 130 Hz](https://tex.z-dn.net/?f=f_%7Bsound%7D%20%3D%20130%20Hz)
Part b)
As we know that the speed of sound is
v = 345 m/s
We know that the frequency of sound is
f = 130 Hz
now the wavelength is given as
![\lambda = \frac{v}{f}](https://tex.z-dn.net/?f=%5Clambda%20%3D%20%5Cfrac%7Bv%7D%7Bf%7D)
![\lambda = \frac{345}{130}](https://tex.z-dn.net/?f=%5Clambda%20%3D%20%5Cfrac%7B345%7D%7B130%7D)
![\lambda = 2.65 m](https://tex.z-dn.net/?f=%5Clambda%20%3D%202.65%20m)
<h3>16.</h3>
Your answer is correct.
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<h3>17.</h3>
The fractional change in resistance is equal to the given temperature coefficient multiplied by the change in temperature.
R = R₀×(1 + α×ΔT)
R = (10.0 Ω)×(1 + 0.004×(65 -20)) = 11.8 Ω
Turn into stone. this will cause erosion for magma to turn to stone