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DaniilM [7]
3 years ago
6

Which person will experience what happens to sounds due to the Doppler effect?

Physics
1 answer:
horsena [70]3 years ago
6 0

Answer:

4

Explanation:

as toddler will go away then come closer

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We now have two tappers that are tapping the surface of the water together. They are tapping in sync (both are hitting the surfa
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Answer:

The cork moves up and down.

Explanation:

The cork moves up and down because of the waves produce due to tapping the surface of water. The cork experience movement due to placed on the water surface so when the wave passes through the medium by tapping of water, movement of cork also occur. Cork has high volume and lower mass so it floats on the water surface and experience movement due to waves.

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3 years ago
A force of 20 N is executed to raise a rock weighing 30 N. What is the actual mechanical advantage?
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I am absolutely sure its 1.5
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4 years ago
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Define 1 kg of mass as international standard​
Ann [662]
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A heavy anvil is suspended by a 0.75 m long steel wire that has a mass of 12 g. When the wire is plucked, it hums at its fundame
Dima020 [189]

Explanation:

It is given that,

length of steel wire, l = 0.75 m

Mass of the wire, m = 12 g = 0.012 kg

Fundamental frequency, f = 120 Hz

We need to find the mass of the anvil (m'). The fundamental frequency is given by :

f=\dfrac{v}{2l}

v is the speed of the mass

Speed is given by :

v=\sqrt{\dfrac{T}{\mu}}

\mu is the mass per unit length,\mu=\dfrac{m}{l}

f=\dfrac{1}{2l}\sqrt{\dfrac{T}{\mu}}

T is the tension in the wire,

f=\dfrac{1}{2l}\sqrt{\dfrac{Tl}{m}}

T=4f^2lm

T=4(120)^2\times 0.75\times 0.012

T = 518.4 N

Tension in the wire, T = m' g

m'=\dfrac{T}{g}

m'=\dfrac{518.4}{9.8}

m' = 52.89 kg

So, the mass of the anvil is 52.89 kg. Hence, this is the required solution.

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4 years ago
If the mass of the spacecraft were doubled, how much would the force of gravity would change?
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F=mg
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3 years ago
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