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3 years ago

14

Buco novia de 15n de edad

1 answer:

Zigmanuir [339]3 years ago

4 0

Yo tengo quince y soy de cali y estoy viviendo en mexico

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Explain what major mistake producers made when editing the battle scenes for the movie Star Wars

Artyom0805 [142]

Answer: Air

Explanation:

Roffns dn b bdd

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3 years ago

One string of a certain musical instrument is 70.0 cm long and has a mass of 8.79 g . It is being played in a room where the spe

Svetach [21]

To solve this problem we will apply the concepts of linear mass density, and the expression of the wavelength with which we can find the frequency of the string. With these values it will be possible to find the voltage value. Later we will apply concepts related to harmonic waves in order to find the fundamental frequency.

The linear mass density is given as,

$\mu = \frac{m}{l}$

$\mu = \frac{8.79*10^{-3}}{70*10^{-2}}$

$\mu = 0.01255kg/m$

The expression for the wavelength of the standing wave for the second overtone is

$\lambda = \frac{2}{3} l$

Replacing we have

$\lambda = \frac{2}{3} (70*10^{-2})$

$\lambda = 0.466m$

The frequency of the sound wave is

$f_s = \frac{v}{\lambda_s}$

$f_s = \frac{344}{0.768}$

$f_s = 448Hz$

Now the velocity of the wave would be

$v = f_s \lambda$

$v = (448)(0.466)$

$v = 208.768m/s$

The expression that relates the velocity of the wave, tension on the string and linear mass density is

$v = \sqrt{\frac{T}{\mu}}$

$v^2 = \frac{T}{\mu}$

$T= \mu v^2$

$T = (0.01255kg/m)(208.768m/s)^2$

$T = 547N$

The tension in the string is 547N

PART B) The relation between the fundamental frequency and the $n^{th}$ harmonic frequency is

$f_n = nf_1$

Overtone is the resonant frequency above the fundamental frequency. The second overtone is the second resonant frequency after the fundamental frequency. Therefore

$n=3$

Then,

$f_3 = 3f_1$

Rearranging to find the fundamental frequency

$f_1 = \frac{f_3}{3}$

$f_1 = \frac{448Hz}{3}$

$f_1 = 149.9Hz$

7 0

3 years ago

13) A branch falling from a tree is to gravity as a car driving on the road is to A) a driver's foot off of the accelerator, coa

IgorC [24]

<span>a driver's foot off the accelerator and on the break pedal. C</span>

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3 years ago

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Due to the earth's rotation, a person would be traveling faster at the equator than they would at a position halfway from the eq

Kisachek [45]

Answer:

False

Explanation:

It is actually the exact opposite.

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2 years ago

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According to the first law of thermodynamics what could happen when heat is added to a system

tekilochka [14]

temperature rises ? specific heat capacity etc ...

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