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3 years ago

A formant is _________.

Physics

1 answer:

Stolb23 [73]3 years ago

3 0

Answer:

Our final answer is option (c) that is :

A resonant mode of your vocal tract.

Explanation:

Lets understand pitch of a sound first:

Pitch: Is the rate of vibrations produced and also the degree of lowness and highness of a tone.

Pitch formant:

When we take air inside our vocal tract it oscillates at different pitches depending upon the cast and capacity of the opening of the vocal tract.

Formant comes from the vocal tract and also at a resonance of our vocal tract.

So basically the vocal tract play a vital role for the formant.

Final answer is : A formant is a resonant mode of our vocal tract.

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A rock is dropped from a 110-m-high cliff. How long does it take to fall (a) the first 55.0 m and (b) the second 55.0 m?

Genrish500 [490]

Answer:

a) t = 3.35[s]; b) t = 1.386[s]

Explanation:

We can solve this problem by dividing it into two parts, for the first 55 [m] and then the second part with the remaining 55 [m].

We will take the initial velocity as zero, as the problem does not mention that the Rock was thrown at initial velocity.

And using kinematics equations:

$v_{f}^{2}= v_{o}^{2}+2*g*y\\where:\\v_{o}=0\\g=gravity = 9.81[m/s^2]\\y=55 [m]\\v_{f}^{2}=0+2*9.81*55\\v_{f}=\sqrt{2*9.81*55} \\v_{f}=32.85[m/s]$

Now we can calculate the time:

$v_{f}=v_{o}+g*t\\t=\frac{v_{f}-v_{o}}{g}\\ t=\frac{32.85-0}{9.81}\\ t=3.35[s]$

Now we can calculate the second time, but using as a initial velocity 32.85[m/s].

The final velocity will be:

$v_{f}^{2}= v_{o}^{2}+2*g*y\\v_{f}=\sqrt{v_{o}^{2}+2*g*y} \\v_{f}=\sqrt{32.85^{2}+2*9.81*55 } \\v_{f}=46.45[m/s]$

Now we can calculate the second time:

$t=\frac{46.45-32.85}{9.81} \\t= 1.386[s]$

Note: The reason the second time is shorter even though it is the same distance is that the acceleration of gravity increases the speed of the rock more and more as it falls.

7 0

3 years ago

What are ways to remove static charge

Tasya [4]

Answer:

Explanation:

Use a humidifier. Static electricity is more active when the air is dry, especially in the winter months when people heat their houses, further reducing humidity in the air. ...

Treat your carpets with an anti-static chemical. ...

Rub upholstery with dryer sheets.

6 0

4 years ago

A man hits a ball and provides it with an initial velocity of 5.0 m/s on a rough horizontal surface. Due to the surface the ball

Alex777 [14]

Answer:

a) After 5.19 seconds dog catch the ball.

b) From the dog's initial position at 20.20 m dog catches the ball.

c) Speed of the ball when dog catches ball = 2.405 m/s

Speed of the dog when dog catches ball = 7.785 m/s

Explanation:

a) Let the time of catching be t.

We have equation of motion s = ut + 0.5 at²

Consider the motion of ball

Initial velocity, u = 5 m/s

Acceleration, a = -0.5 m/s²

Time, t = t

Substituting

s = 5 x t + 0.5 x -0.5 x t²

s = 5t - 0.25t²

Consider the motion of dog

Initial velocity, u = 0 m/s

Acceleration, a = 1.5 m/s²

Time, t = t

Substituting

s + 1 = 0 x t + 0.5 x 1.5 x t²

s = 0.75t²

If they catch up displacement of dog is 1 m more than displacement of ball.

That is

5t - 0.25t² + 1 = 0.75t²

t² - 5t -1 = 0

t = 5.19 or t = -0.19(not possible)

So after 5.19 seconds dog catch the ball.

b) Displacement of dog, s = 0.75t²

s = 0.75 x 5.19²

s = 20.20 m

From the dog's initial position at 20.20 m dog catches the ball.

c) We have equation of motion v = u + at

Consider the motion of ball

Initial velocity, u = 5 m/s

Acceleration, a = -0.5 m/s²

Time, t = 5.19 s

Substituting

v = 5 + -0.5 x 5.19 = 2.405 m/s

Speed of the ball when dog catches = 2.405 m/s

Consider the motion of dog

Initial velocity, u = 0 m/s

Acceleration, a = 1.5 m/s²

Time, t = 5.19 s

Substituting

v = 0 + 1.5 x 5.19 = 7.785 m/s

Speed of the dog when dog catches ball = 7.785 m/s

3 0

3 years ago

Consider this statement: Air is matter. Which facts best support the statement?

lyudmila [28]

A. Balloons can be filled with air.
C. Air has mass.

7 0

3 years ago

Read 2 more answers

Inside a car that was at 273 K, a bottle with a pressure at 100,000 pascals warms up to

Deffense [45]

Answer:

P2 = 128,205 pascal.

Explanation:

Given the following data;

Original Pressure, P1 = 100,000 pascals

Original Temperature, T1 = 273K

New Temperature, T2 = 350K

To find new pressure P2, we would use Gay Lussac' law.

Gay Lussac's law states that when the volume of an ideal gas is kept constant, the pressure of the gas is directly proportional to the absolute temperature of the gas.

Mathematically, Gay Lussac's law is given by;

$PT = K$