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Harlamova29_29 [7]
3 years ago
14

Sound is an example of ?

Physics
2 answers:
wlad13 [49]3 years ago
8 0
Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
valentina_108 [34]3 years ago
3 0
A. Longitudinal wave
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Which one of the following statements concerning the Stefan-Boltzmann equation is correct? The equation can be used to calculate
Helen [10]

"The equation can be used to calculate the power absorbed by any surface" statement concerning the Stefan-Boltzmann equation is correct.

Answer: Option A

<u>Explanation:</u>

According to Stefan Boltzmann equation, the power radiated by black body radiation source is directly proportionate to the fourth power of temperature of the source. So the radiation transferred is absorbed by another surface and that absorbed power will also be equal to the fourth power of the temperature. So the equation describes the relation of net radiation loss with the change in temperature from hotter temperature to cooler temperature surface.  

                            P=e \sigma A\left(T^{4}-T_{c}^{4}\right)

So this law is application for calculating power absorbed by any surface.

4 0
3 years ago
If we increase the force applied to an object, and all other factors remain the same, the amount of work will
soldier1979 [14.2K]
The question doesn't give us enough information to answer.
The answer depends on the mass of the object, how long the force
acts on the object, the OTHER forces on the object, and whether the
object is free to move.

-- If you increase the force with which you push on a brick wall,
the amount of work done remains unchanged, namely Zero.

-- If you push on a pingpong ball with a force of 1 ounce for 1 second,
the ball accelerates substantially, it moves a substantial distance, and
so the work done is substantial.

-- But if you push on a battleship, even with a much bigger force ...
let's say 1 pound ... and keep pushing for a month ... the ship accelerates
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3 0
3 years ago
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What galaxies would you most likely find at the center of a large cluster of galaxies?
julsineya [31]

A large elliptical galaxy

7 0
3 years ago
Help me please. <br> A<br> B<br> C<br> D
Y_Kistochka [10]

I will go to school tomorrow .....is this present tense or past tense or future tense

5 0
1 year ago
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Alice and Bob are each riding horses on a carousel. Alice's horse is twice as far from the axis of spin of the carousel as Bob's
FromTheMoon [43]

Answer:

option (a)

Explanation:

the angular velocity of the carousel is same througout the motion, so the angular velocity of all the horses is same, but the linear velocity is different for different horses.

As the angular displacement of all the horses are same in the same time so the angular velocity is same.

The relation between the linear velocity and the angular velocity is given by

v = r ω

where, v is linear velocity and r be the distance between the horse and axis of rotation and ω be the angular velocity.

So, the angular velocity of Alice horse is same as the angular velocity of Bob horse.

ωA = ωB

Thus, option (a) is true.

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3 years ago
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