#8) A 1500 kg plane has an acceleration of
1 answer:
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Answer:
1) 341 Hz
Explanation:
When a string vibrates, it can vibrate with different frequencies, corresponding to different modes of oscillations.
The fundamental frequency is the lowest possible frequency at which the string can vibrate: this occurs when the string oscillate in one segment only.
If the string oscillates in n segments, we say that it is the n-th mode of vibration, or n-th harmonic.
The frequency of the n-th harmonic is given by
where
n is the number of the harmonic
is the fundamental frequency
Here we have:
is the frequency of the 3rd harmonic
So the fundamental frequency is
And so, the frequency of the 2nd harmonic is:
Answer:
D) surface area of the water
Explanation:
The pressure at the bottom of a column of fluid is given by Stevino's law:
where
p is the pressure at the bottom of the column
is the density
g is the acceleration due to gravity
h is the depth of the liquid
So, we see that the pressure at the bottom of a jug filled with water depends on all these quantities:
A) depth of the liquid
B) acceleration due to gravity
C) density of water
While it does not depend on:
D) surface area of the water