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2 years ago

The motor makes a noise when it is turned on.

Physics

1 answer:

Zanzabum2 years ago

5 0

The water tank waves are transverse waves while the sound waves are longitudinal waves.

A wave is a disturbance along a medium which transfers energy. We know that the water tank waves are transverse waves while the sound waves are longitudinal waves.

The difference between the two is that in the water waves, the direction of the wave motion is perpendicular to the disturbance while in the sound waves, the the direction of the wave motion is parallel to the disturbance.

Learn more about waves:brainly.com/question/16263433?

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Use the drop-down menus to complete the sentences.

Musya8 [376]

Answer:

yea i need this 2

Explanation:

3 0

3 years ago

A manometer that is filled with water (rho=1000 kg/m3) is connected to a wind tunnel to measure the pressure inside the test sec

Anna [14]

To develop this problem it is necessary to apply the concepts performed to the absolute pressure based on the reference pressure (atmospheric) and the pressure that is generated due to the height of the column of the measured liquid.

In mathematical terms the previous concept can be expressed as

$P_{abs} = P_{atm} -\rho gh$

Where

$P_{atm}=$ Atmospheric Pressure

$\rho =$ Density

g = Gravitational acceleration

h = Height

Our values are given as

$h = 10*10^{-3}m$

g = 9.8m/s

$\rho_{water} = 1000kg/m^3$

$P_{atm} = 100kPa$

Replacing we have then that

$P_{abs} = P_{atm} -\rho gh$

$P_{abs} = 100 -(1000)(9.8)(10*10^{-3})$

$P_{abs} = 99.9019kPa$

Therefore the absolute pressure in the test section is 99.9019kPa

6 0

3 years ago

What determines if a star becomes a dwarf, neutron star or a black hole?

faust18 [17]

I'm pretty sure it's the neutron star.

3 0

3 years ago

What adaptation in frogs enables them to swim

Flauer [41]

Answer:

Most of the frogs have webbed feet which helps them swim. The thin skin between the toes helps them to push through the water. The frog's feet is webbed ,So they can easily swim.. The skin between toes are flexible soo they can freely push and pull it

Explanation:

6 0

4 years ago

Read 2 more answers

Firemen are shooting a stream of water at a burning building using a high-pressure hose that shoots out the water with a speed o

Mrac [35]

Answer:

a)α= 53.13°

b)The velocity at the highest point = 15 m/s

The acceleration at the highest point = 9.8 $m/s^2$

c)h=15 m

V=18.02 m/s

Explanation:

Speed of water ,u= 25 m/s

So the horizontal component of speed u = u cos α

Given that horizontal distance cover by water in 3 s is 45 m.

So We know that in projectile motion horizontal acceleration is zero.

In horizontal direction

Distance = Velocity x time

45 = u cos α x 3

u cos α = 45

45 = 25 cos α x 3

cos α = 45/75

α= 53.13°

So the velocity at the highest point = u cos α

The velocity at the highest point = 15 m/s

The acceleration at the highest point = 9.8 $m/s^2$

Now the velocity along vertical direction(Vo) = u sin α

Vo= 25 sin 53.13°

Vo =20 m/s

$h=V_o.t-\dfrac{1}{2}gt^2$

$h=20\times 3-\dfrac{1}{2}\times 10\times 3^2$

h=15 m

So at 15 m above the ground water will strike .

The y-component of velocity after 3 sec

Vy= Vo - g t

Vy = 20 - 10 x 3

Vy= -10 m/s

The horizontal component of velocity will remain 15 m/s.

The resultant velocity

$V=\sqrt{10^2+15^2}\ m/s$

V=18.02 m/s

5 0

4 years ago