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3 years ago

A singer raises his pitch one octave. What quality of the sound wave has changed?

2 answers:

6 0

If a singer raises his pitch by one octave this means that he has raised the frequency. So the frequency will be increased.

Frequency is the reciprocal of period which is the duration of time of one cycle in a repeating event.

Frequency and pitch are directly proportional. So the greater the pitch of the singer the greater its frequency gets increased.

This means the wavelength has also decreased as it is inversely proportional to the frequency.

Elanso [62]3 years ago

3 0

C). The amplitude has increased

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4 years ago

The emt must assume that any unwitnessed water-related incident is accompanied by:________

natta225 [31]

The EMT must assume that any unwitnessed water-related incident is accompanied by potential spinal damage.

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2 years ago

which of the following is not a type of cosmic radiation? gamma-rays, x-rays, sound waves, or cosmic rays

Archy [21]

Answer: sound waves or cosmic rays

Explanation:

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7 0

3 years ago

A ball is thrown vertically down from the edge of a cliff with a speed of 4 m/s, how high is the cliff, if it took 12 s for the

Vesna [10]

Answer:

The height of the cliff from which the ball was dropped from is 224.4m.

\overline{v}={\frac{\Delta x}{\Delta t}}

Given the data in the question;

Initial velocity of the ball;

Time taken by the ball to reach the ground;

Distance or Height of the cliff from which the ball was thrown from;

To get the height of the Cliff, we use the Second Equation of Motion:

Where s is the distance or height, is the initial velocity, t is the time and a is the acceleration. Since the ball was thrown down from a certain height (cliff), its is now under the influence of gravity. acceleration due to gravity;

Hence, the equation becomes

We substitute the given values into the equation

Therefore, the height of the cliff from which the ball was dropped from is 224.4m

Explanation:

3 0

3 years ago

Read 2 more answers

Birdman is flying horizontally at a

zavuch27 [327]

Answer:

X=92.49 m

Explanation:

Given that

u= 21 m/s

h= 97 m

Time taken to cover vertical distance h

h= 1/2 g t²

By putting the values

97 = 1/2 x 10 x t² ( g = 10 m/s²)

t= 4.4 s

The horizontal distance

X= u .t

X= 21 x 4.4

X=92.49 m

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3 years ago