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3 years ago

For which job would a noise canceling device be the most beneficial?

Physics

2 answers:

musickatia [10]3 years ago

8 0

A carpenter using saws and cutting tools as the tools make loud noises.

Alex Ar [27]3 years ago

6 0

Answer:

a carpenter using saws and cutting tools

Explanation:

In noise cancelling system we know that two sounds are cancelled just by using the concept of destructive interference.

Here when two sounds which are in opposite phase are superimposed with each other then due to this superposition of waves the resultant intensity will be less than the intensity of any individual wave.

This phenomenon is known as destructive interference.

This is used to decrease the level of sound in such a part of work where we have large sound in output so here correct answer will be

a carpenter using saws and cutting tools

This is because it produce large noise while we use this cutting tools

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4 years ago

Describe three events about matter and energy that cannot be explained

nekit [7.7K]

Answer:

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Have a good day! :D

Explanation:

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3 years ago

What is the difference between electric force and electricity

FromTheMoon [43]

Answer:

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Explanation:

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3 years ago

Two children push on heavy crate that rests on a basement floor. one pushes horizontally with a force of 150 N and the other pus

Makovka662 [10]

The force of friction is 330 N

Explanation:

We can solve this problem by applying Newton's second law of motion, which states that the net force acting on an object is equal to the product between the mass of the object and its acceleration:

$sum F = ma$

where

$\sum F$ is the net force

m is the mass

a is the acceleration

For the crate in this problem, we have 3 forces acting on it:

- The force applied by the 1st child, $F_1 = 150 N$ forward

- The force applied by the 2nd child, $F_2 = 180 N$

- The force of friction, $F_f$ , acting backward

So the net force is

$\sum F = F_1 + F_2 - F_f$

We also know that the crate remains stationary, which means that its acceleration is zero:

a = 0

Therefore, we can rewrite Newton's second law as

$F_1 + F_2 - F_f = 0$

From which we find

$F_f = F_1+F_2 = 150 + 180 =330 N$

Learn more about friction and Newton's second law:

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#LearnwithBrainly

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3 years ago

What tool do you use to measure the acidity of lemon juice?

maxonik [38]

You would use ph paper. because it tells you how acidic something is. you can even put a piece in your mouth and check how acidic your mouth is. there is a key that shows you various colors and you would match the color of your strip to the color of the key. and choose the number next to the color on the key. hope this helps.

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3 years ago