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3 years ago

How could you show that sound waves are caused by vibrations?

Physics

1 answer:

Yakvenalex [24]3 years ago

8 0

Answer:

Sound waves are formed when a vibrating object causes the surrounding medium to vibrate. A medium is a material (solid, liquid or gas) which a wave travels through. As sound waves move through a medium the particles vibrate forwards and backwards.

Explanation:

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Oduvanchick [21]

It's easy raising the barbell.

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3 years ago

As a wave travels through a medium, it displaces particles in a direction parallel to the motion of the wave. We can conclude th

IgorLugansk [536]

Im sure the answer to this question is c.

5 0

3 years ago

An orienteer runs 400m directly east and then 500m to the northeast (at a 45 degree andle from due east and from due north). Pro

Aleks04 [339]

Answer:

Final displacement with respect to the starting position is 832.37 meter

Explanation:

Lets consider that the orienteer start to run on the point of (0,0) point of a coordinate system. When he runs towards to east side about 400m, he will be at the point A(400,0). After he runs to the northeast (at a 45 degree angle from due east and from due north), approximately he will make 353.55 meter to east and 353.55 meter to the north side and he will be at the point of B(753.55, 353.55)

From the starting point total displacement will be 832.37 meter. Please check the attached graphical solution.

6 0

3 years ago

After fixing a flat tire on a bicycle you give the wheel a spin. If its initial angular speed was 6.36 rad/s and it rotated 14.7

lesya692 [45]

To solve this problem we will apply the concepts related to the cinematic equations of angular motion. On these equations, angular acceleration is defined as the squared difference of angular velocity over twice the radial displacement. This is mathematically:

$\alpha = \frac{\omega^2-\omega_0^2}{2\theta}$

Our values are,

$\text{Initial angular velocity} = \omega_0 =6.36 rad/s$

$\text{Final angular velocity} = \omega =0$

$\text{Angular displacement} = \theta = 14.7rev = 29.4\pi rad$

Replacing,

$\alpha = \frac{- 6.36^2}{29.4\pi}$

$\alpha = -0.43rad/s^2$

Therefore the angular acceleration is $-0.43rad/s^2$

4 0

3 years ago

Answer and will mark you as brainliest . (it's that easy)

Nonamiya [84]

Speed is a SCALAR quantity and velocity is a VECTOR quantity.
VECTOR quantities have size and direction.
The two objects on the right have the same MAGNITUDE, but different VELOCITIES because they’re going in different directions.
This is shown by the MINUS sign.
Acceleration is a change in speed, so it is a SCALAR quantity.
Acceleration in the same direction as an object moving in that direction will make that object SPEED UP.
Acceleration in the opposite direction will make an object SLOW DOWN or DECELERATE.
An acceleration of ZERO will not change the velocity of an object.
Hope that helps. :)

4 0

4 years ago