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3 years ago

For work to be done on the object the object has to

Physics

2 answers:

Fittoniya [83]3 years ago

6 0

Answer:

Work is defined by the movement done by an object caused by a force.

So for work to be done on an object, the object must be receiving a force and being moved or changing position, and we can synthesize this by "the object has to accelerate"

Where acceleration implies a force applied, and an accelerating body is changing his velocity, so it is moving.

Nata [24]3 years ago

3 0

Gain energy

good luck!

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if the intensity of a person's voice is 4.6 x 10^-7 w/m^2 at a distance of 2.0 m, how much sound power does that person generate

777dan777 [17]

The sound power the person generated is $2.313 \times 10^{-5} \ W$ .

<h3>Area of the sound wave</h3>

The area of the sound wave is calculated as follows;

$A = 4\pi r^2\\\\A = 4 \pi \times (2)^2\\\\A = 50.272 \ m^2$

<h3>Power generated</h3>

The sound power the person generated is calculated as follows;

$P = I A\\\\P = 4.6\times 10^{-7} \ W/m^2 \ \ \times \ \ 50.272 \ m^2\\\\P = 2.313 \times 10^{-5} \ W$

Learn more about intensity of sound here: brainly.com/question/4431819

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Answer and Explanation:

The answer is <u>D) Alpha and Gamma</u>

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