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3 years ago

A sound wave is produced when a medium begins to _________

Physics

2 answers:

MatroZZZ [7]3 years ago

6 0

Answer:

D) Vibrate

Explanation:

Waves is the disturbance that propagate energy through the medium. So here if we will say that sound waves are produced then in that case we need some disturbance which will carry the sound energy through the medium.

Here this disturbance is created by the vibration of medium particles so in order to produce sound we need to vibrate the medium.

Due to the vibration of medium it will transfer energy to the air particles and then due to this vibration of air molecules this is transferred to the receiver of the sound energy

So correct answer will be

D) Vibrate

Natasha2012 [34]3 years ago

5 0

The answer is D) vibrate. vibrations are what cause sound. Consequently, this is why there is no sound in space, because there is no medium for the for which sound to travel

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wel

Answer:Final volume after pressure is applied=4,292cm3

Explanation:

Using the bulk modulus formulae

We have that The bulk modulus of waTer is given as

K =-V dP/dV

Where K, the bulk modulus of water = 2.15 x 10^9N/m^2

2.15 x 10^9N/m^2= - 4,300 x 4 × 106N/m2 / dV

dV = - 4,300 x 4 × 10^6N/m^2/ 2.15 x 10^9N/m^2

dV (change in volume)= -8.000cm^3

Final volume after pressure is applied,

V= V+ dV

V= 4300cm3 + (-8.000cm3)

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3 years ago

The kinetic energy of an object with a mass of 6.8 kg and a velocity of 5.0 m/s is J. (Report the answer to two significant figu

abruzzese [7]

Answer:

$\boxed{\sf Kinetic \ energy \ (KE) = 85 \ J}$

Given:

Mass (m) = 6.8 kg

Speed (v) = 5.0 m/s

To Find:

Kinetic energy (KE)

Explanation:

Formula:

$\boxed{ \bold{\sf KE = \frac{1}{2} m {v}^{2} }}$

Substituting values of m & v in the equation:

$\sf \implies KE = \frac{1}{2} \times 6.8 \times {5}^{2}$

$\sf \implies KE = \frac{1}{ \cancel{2}} \times \cancel{2} \times 3.4 \times 25$

$\sf \implies KE =3.4 \times 25$

$\sf \implies KE = 85 \: J$

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3 years ago

What happens if the air pressure in your throat and outside body is less than the air pressure in your middle ear when you swall

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Answer:

When the air pressure in the throat and outside the body is less than the air pressure in the middle ear, barotrauma occurs.

Explanation:

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