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sukhopar [10]
2 years ago
10

Why is the efficiency of a machine always less than 100%?

Physics
1 answer:
never [62]2 years ago
8 0

Answer:The percentage of the work input that becomes work output is the efficiency of a machine. Because there is always some friction, the efficiency of any machine is always less than 100 percent.

Explanation:

Sub to rockingcoolstyle15 on yt

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Using Newton’s second law, why do you think a cotton ball may not be used as a baseball in a baseball game.
stich3 [128]

Answer:

as its mass and velocity will less so its momentum will be less than that of baseball

3 0
3 years ago
How would decreasing the time it takes you to run a certain distance affect your speed? Explain your reasoning.
Tom [10]

Explanation:

The speed is determined by the distance that is traveled by an object during a given amount of time. If the time is decreased, the speed would increase. The reason for this is that time is inversely proportional to the speed of an object.

5 0
2 years ago
Atoms that combine in What plsss
Brilliant_brown [7]

When atoms combine to form covalent bonds, the resulting collection of atoms or group of atoms is called a molecule.

<h3>How does atom combine?</h3>

Atoms can combine with each other through sharing of the electrons, donating the electrons etc. to make molecules.

When atoms combine by forming covalent bonds, the resulting collection of atoms is called a molecule. We can therefore say that a molecule is the simplest unit of a covalent compound.

Thus, when atoms combine to form covalent bonds, the resulting collection of atoms or group of atoms is called a molecule.

Learn more about combination of atoms here: brainly.com/question/5974633

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3 0
1 year ago
A. Test used to measure flexibility B. The elasticity of muscle groups C. Test approve by the president of the United States D.
olchik [2.2K]
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<span>3. H </span>
<span>4. J </span>
<span>5. B </span>
<span>6. I </span>
<span>7. D </span>
<span>8. E </span>
<span>9. A </span>
10. F and   <span>For the best answers, search on this site </span>https://shorturl.im/FbQuG<span> </span><span>





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4 0
3 years ago
According to coulombs law, how is the electric force related to the distance between two charges?
lorasvet [3.4K]

Answer:

D

Explanation:

From the formula of coulombs law F = Kq1q2/square of r, we can say the electric force is indirectly related to square of r

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