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3 years ago

According to the Doppler effect, the __________ of sound waves will determine the pitch of the sound.

Physics

1 answer:

Vikentia [17]3 years ago

3 0

The frequency of the sound waves determine their pitch.

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A man in a lift is moving upwards in a constant speed.the weight of the man is W.Acc

Nookie1986 [14]

Answer:

Normal force=mg

Explanation:

The reaction force of weight is the normal force.

in order to find the normal for we need to write all the forces and set it equal to the net force:

N-mg=ma (since it is a constant speed the a=0)

N=mg

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3 years ago

Which of the following describes the difference between the classes of levers?

Semenov [28]

the placement of the fulcrum

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4 years ago

Can anyone help me I will give you 30 points

Aleonysh [2.5K]

Answer:

1) ELECTRO MAGNET

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4 years ago

Which two aspects of sound go together?

Varvara68 [4.7K]

Which two aspects of sound go together?

Pitch and frequency

Pitch and frequency are two aspects of sound that go together. Pitch means Higness or Lowness of sound. Frequency is the measurement of the number of times that a repeated event occurs per unit of time...~

4 0

3 years ago

Read 2 more answers

A basketball player spins the ball with an angular acceleration of 10 rad/s2. What is the ball’s final angular velocity if the b

Lena [83]

Explanation:

It is given that,

The angular acceleration of the basketball, $\alpha=10\ rad/s^2$

Time taken, t = 3 seconds

We need to find the ball’s final angular velocity if the ball starts from rest. It can be calculated using definition of angular acceleration i.e.

$\alpha=\dfrac{\omega_f-\omega_i}{t}$

$\omega_i=0\ (rest)$

$\omega_f=\alpha t$

$\omega_f=10\ rad/s^2\times 3\ s$

$\omega=30\ rad/s$

So, the ball's final angular velocity is 30 rad/s. Hence, this is the required solution.

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3 years ago