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2 years ago

The pitch of a sound wave is its wavelength True or false

Physics

2 answers:

BlackZzzverrR [31]2 years ago

5 0

Answer:

False

Explanation:

its false

asambeis [7]2 years ago

4 0

False, the pitch of a sound wave is NOT its wavelength

The pitch of sound is akin to frequency. This can be defined as the time that is taken by a wave to complete one cycle (wavelength).

Explanation:

While frequency and wavelength of a wave are related, the relative pitch of the sound can change without changing the wavelength of the wave. An example of this phenomenon is when you hear a wailing ambulance approaching you. The pitch is high as it approaches you but the pitch lowers when it passes you and teh ambulance moves away from you. The wavelength of sound waves did not change but the compression and stretching of the sound wavelengths, respectively, caused the difference in the pitch of the sound.

Learn More:

For more on sound pitch;

brainly.com/question/1621941

brainly.com/question/1509263

#LearnWithBrainly

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The three forces shown act on a particle. what is the direction of the resultant of these three forces?

melisa1 [442]

Missing figure: http://d2vlcm61l7u1fs.cloudfront.net/media/f5d/f5d9d0bc-e05f-4cd8-9277-da7cdda3aebf/phpJK1JgJ.png

Solution:
We need to find the magnitude of the resultant on both x- and y-axis.

x-axis) The resultant on the x-axis is
$F_x = 65 N\cdot cos 30^{\circ} - 30 N - 20 N\cdot sin 20^{\circ} = 19.45 N$
in the positive direction.

y-axis) The resultant on the y-axis is
$F_y = 65 N \cdot sin 30^{\circ} - 20 N \cdot cos 20^{\circ} = 13.70 N$
in the positive direction.

Both Fx and Fy are positive, so the resultant is in the first quadrant. We can find the angle and so the direction using
$\tan \alpha = \frac{F_y}{F_x} = \frac{13.70 N}{19.45 N}=0.7$
from which we find
$\alpha=35^{\circ}$

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2 years ago

An object with high momentum ______.

Pepsi [2]

The answer should be (b)

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2 years ago

A wheel that is rotating at 33.3 rad/s is given an angular acceleration of 2.15 rad/s 2. Through what angle has the wheel turned

Neporo4naja [7]

Answer:

The angle through which the wheel turned is 947.7 rad.

Explanation:

initial angular velocity, $\omega _i$ = 33.3 rad/s

angular acceleration, α = 2.15 rad/s²

final angular velocity, $\omega_f$ = 72 rad/s

angle the wheel turned, θ = ?

The angle through which the wheel turned can be calculated by applying the following kinematic equation;

$\omega_f^2 = \omega_i^2 + 2\alpha \theta\\\\\theta = \frac{\omega_f^2\ -\ \omega_i^2}{2\alpha } \\\\\theta = \frac{(72)^2\ -\ (33.3)^2}{2(2.15)}\\\\\theta = 947.7 \ rad$

Therefore, the angle through which the wheel turned is 947.7 rad.

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2 years ago

If this experiment is repeated at a place3 meters above the sea level the acceleration due to gravity is expected to

weqwewe [10]

The question doesn't describe any experiment. If the same experiment is repeated, no matter how many times, the acceleration due to gravity will remain the same as it was during the non-existent original experiment, and will have no effect on anything.

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2 years ago

Light is shown through air on a diamond (n=2.42) and it partially reflects and refracts.

NikAS [45]

Answer:

Light is shown through air on a diamond n=2.42) and it partially reflects and reflects.

Based on the incident angle of 62.5 shown what is the angle of reflection of the light

question of options

21.5

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2 years ago