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2 years ago

Pitch describes the loudness of a sound. True False?

Physics

1 answer:

SOVA2 [1]2 years ago

7 0

The answer for this question would be choice B) FALSE because pitch is the quality of sound. *I take no credit for the image below I just found it off google.

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According to the principle of faunal succession, what must be true of the fossils on a layer below? Now

Firdavs [7]

It means that they were set earlier therefor they are older.

7 0

2 years ago

Read 2 more answers

HeLp AsAp!!!!!! How long would it take you to hop 30 meters based on your speed for the 5-meter trial? Show your work!

Novosadov [1.4K]

Answer:

20.5s

Explanation:

Given parameters:

Distance = 30m

Unknown:

Time = ?

Solution:

The time it will take to hop a distance of 30m using the speed for the 5m trial is the duration of the trip.

The speed for the 5m trial = 1.46m/s

Now;

Speed = $\frac{distance}{time}$

Distance = speed x time

time = $\frac{distance }{speed}$

Input the parameters and solve;

time = $\frac{30}{1.46}$ = 20.5s

7 0

3 years ago

Does this diagram illustrate the second law of thermodynamics? Why or why not

Savatey [412]

<h2>Answer:</h2>

The diagram is not showing the second law of thermodynamics. It is the demonstration of 1st law of thermodynamics.

<h3>Explanation:</h3>

Second law of thermodynamics describes the entropy of the system increase with time, it does not decrease with time. It is constant for ideal systems.

While in first law of thermodynamics, it is stated that the energy of a system can not be lost but it is transferred from one form to other form.

And in this picture, it is shown that the energy released from heat source to cold sink is used in doing work.

Work and heat are forms of energy.

5 0

3 years ago

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You need to fill a basketball with air to play with it. You know that your pump expels air at a velocity of 6 cm/s. You know tha

Scrat [10]

Answer:

The diameter of the needle is <u>4.675 cm</u>.

Explanation:

Given:

Volume flow rate is, $\dot V=103\ cm^3$

Velocity of air expelled by pump is, $v=6\ cm/s$

Let the area of the needle be 'A' cm² and the diameter be 'd' cm.

We know that, volume flow rate of the air expelled by pump is given as the product of the needle's area and velocity of air flowing through that area.

Therefore, volume flow rate is given as:

$\dot V=A\times v\\\\103=A\times 6\\\\6A=103\\\\A=\frac{103}{6}\ cm^2$

Now, considering the needle to be circular, area of the needle can be written as:

$A=\frac{\pi}{4}\times d^2\\\\\frac{103}{6}=\frac{\pi}{4}\times d^2\\\\d^2=\frac{103\times 4}{6\pi}\\\\d=\sqrt{\frac{103\times 4}{6\pi}}\\\\d=4.675\ cm$

Therefore, the diameter of the needle is 4.675 cm.

8 0

3 years ago

How star properties affect star formation? Provided following are the spectral types of four different main-sequence stars. Rank

zhannawk [14.2K]

Answer:

-M6

-G2

-A5

-O9

Explanation:

5 0

3 years ago