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nikklg [1K]
3 years ago
9

How can the force of friction between two surfaces be reduced?

Physics
2 answers:
Stells [14]3 years ago
5 0
B if you make it rougher they won’t be able to have frictions
vodomira [7]3 years ago
4 0
C because it will reduce the friction and help the object work together
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What would happen if a proton were added to the nucleus of the atom? (Check all that apply)
katen-ka-za [31]

Answer:

It would become a different element.

Explanation:

When you change the number of protons i.e, add a proton in the nucleus of an atom, you will change the atom from one element to a different element and also positive charge of the atom also increased by 1.

For example, adding a proton to the nucleus of an atom of hydrogen creates an atom of helium.

So, we conclude that by adding a proton the atom will change from one element to another element.

3 0
3 years ago
3. The following sound waves have what velocity? (convert cm into m in your calculations.)
mestny [16]

The sound waves with the frequency 20 Hz, 200 Hz, 2,000 Hz, and 20,000 Hz have a velocity of 344 m/s.

<h3>What are sound waves?</h3>

A sound wave is a sample resulting from the motion of strength traveling thru a medium (inclusive of air, water, or every other liquid or stable matter) because it propagates from the supply of the sound. Sound waves are created and convey strain waves, for example, a cellphone.

The frequency can be given as:

Frequency = Velocity/ Wavelength

Velocity = Frequency * Wavelength

The velocity of the following sound waves is given as:

  • Frequency = 20 Hz

Wavelength = 17.2 m

Velocity = 20 * 17.2 m/s

Velocity = 344 m/s

  • Frequency = 200 Hz

Wavelength = 1.72 m

Velocity = 200 * 1.72 m

Velocity = 344 m/s

  • Frequency = 2,000 Hz

Wavelength = 17.2 cm = 0.172 m

Velocity = 2,000 * 0.172 m/s

Velocity = 344 m/s

  • Frequency = 20,000 Hz

Wavelength = 1.72 cm = 0.0172 m

Velocity = 20,000 * 0.0172 m/s

Velocity = 344 m/s

Read more about the  sound waves:

brainly.com/question/13105733

#SPJ1

6 0
2 years ago
Which change in an object would increase the force needed to move the object​
creativ13 [48]

Answer:

force is the answer because force is pushing the item

6 0
3 years ago
Which of newtons laws accounts for the following statement " Negative acceleration is proportional to applied braking force "
fenix001 [56]
I believe that would be his second law!
4 0
4 years ago
During which radioactive decay process does a nucleus lose 2 neutrons and 2 protons?
Kay [80]
Alpha decay is your answer. This picture should explain it to some degree. 

5 0
3 years ago
Read 2 more answers
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