Answer:
Amplitude
Explanation:
make sure you give me a brain thing!!!
Answer:
C. 3,200
Explanation:
MA= F out/ F in.
multiply F in on both sides to cancel it out so you can solve for F out.
Fin*MA=F out
400 * 8 = F out
3,200= F out
Answer:
They break down rocks.
Explanation:
The rain is slightly acidic due to the presence of carbon dioxide. Power plants and automobiles produce gases such as sulfur dioxide and nitric oxide, which react with water vapor in the atmosphere to form acid rain. They help in weathering the rocks which makes up the Earth's crust.
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A type of material that tries to prevent the flow of thermal energy is called an insulator.
Answer:
f = 276.6 Hz
Explanation:
This musical instrument can be approximated to a tube system where each tube has one end open and the other closed.
In the closed part there is a node and in the open part a belly or antinode. Therefore the wavelength is
L = λ/ 4
speed is related to wavelength and frequency
v = λ f
λ = v / f
we substitute
L = v / 4f
f = v / 4L
the speed of sound at 20ºC is
v = 343 m / s
let's calculate
f = 
f = 276.6 Hz
