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Nonamiya [84]
3 years ago
5

What are you doing when you’re making sound? A. Causing air molecules to vibrate. B Causing photons to travel. C Causing air pre

ssure to drop. D Causing electromagnetic waves to radiate.
Physics
1 answer:
Greeley [361]3 years ago
5 0

Answer: A

Causing air molecules to vibrate

Explanation:

Sound is made by vibrations. And it is an energy. When any object vibrates, it causes movement in the air particles. These particles bump into the particles close to them, which makes them vibrate too causing them to bump into more air particles. This movement, called sound waves, keeps going until they run out of energy.

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A 730-N man stands in the middle of a frozen pond of radius 5.0 m. He is unable to get to the other side because of a lack of fr
STatiana [176]

Answer:62.11 s

Explanation:

Given

weight of man =730 N

mass of man m_1=\frac{730}{9.8}=74.48 kg

radius of pound r=5 m

mass of book m_2=1.2 kg

velocity of book v_2=5 m/s

let v_1 be the velocity of man

conserving momentum

0=m_1v_1+m_2v_2

0=74.48\times v_1+1.2\times 5

v_1=\frac{6}{74.48}=0.0805 m/s

time taken by man to reach south end

t=\frac{5}{0.0805}=62.11 s

5 0
4 years ago
Draw a picture of an atom.include protons,neutrons, and electrons.
gogolik [260]
Hey, unfortunately it’s impossible for me to draw one for you here, but you should be able to draw it yourself pretty easily!

Answer:


An atom is built with a combination of three distinct particles: electrons, protons, and neutrons. Each atom has a center nucleus, where the protons and neutrons are densely packed together. Surrounding the nucleus are a group of orbiting electrons. And here is a picture that may assist your further :

Hope this helps
6 0
3 years ago
Find the total volume of the material used to making the cylinder​
gladu [14]

Answer:

Hey mate

Explanation:

Whereas the basic formula for the area of a rectangular shape is length × width, the basic formula for volume is length × width × height.

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4 0
2 years ago
Why is it advisable to wear long sleeves when a student works in a chemistry lab
love history [14]

So then if they do spill the chemical then it gets on their cloths and not on then it dosen"t harm them instead it ruins their shirt.

3 0
3 years ago
Read 2 more answers
PLEASE HELP QUICKLY THANKS
Dmitriy789 [7]

Answer: the answer is d

Explanation:

7 0
3 years ago
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