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STatiana [176]
3 years ago
9

Mention theree disadvantages of friction

Physics
1 answer:
inessss [21]3 years ago
4 0

Answer:

Please find the answer in the explanation.

Explanation:

Mention three disadvantages of friction between the parts of a machine

Three disadvantages of friction between the part of a machine are;

1. Friction causes wear and tear of machine parts.

2. Friction generates heat between the part of a machine.

3. Friction reduces the efficiency of a machine.

How does.

1 . oiling

2 using ball bearing

To reduce friction, you need to apply a lubricant. Oil and grease are examples of a lubricant. A lubricant helps to reduce friction by making the surface of the machine parts slippery thereby reducing tear and wear.

Also, friction can be reduced by using ball bearing which will allow the rolling of machine parts.

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Answer:

<u>We are given: </u>

initial velocity (u) = 0 m/s

final velocity (v) = 10 m/s

displacement (s) = 20 m

acceleration (a) = a m/s/s

<u>Solving for 'a'</u>

From the third equation of motion:

v² - u² = 2as

replacing the variables

(10)² - (0)² = 2(a)(20)

100 = 40a

a = 100 / 40

a = 2.5 m/s²

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3 years ago
A mixture that forms when one substance dissolves another is called
julsineya [31]

Answer:

a solution

Explanation: A solution is a homogeneous mixture consisting of a solute dissolved into a solvent .

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Five hundred joules of heat are added to a closed system. The initial internal energy of the system is 87 J, and the final inter
Aleonysh [2.5K]

We can solve the problem by using the first law of thermodynamics:

\Delta U= Q-W

where

\Delta U is the variation of internal energy of the system

Q is the heat added to the system

W is the work done by the system

In this problem, the variation of internal energy of the system is

\Delta U=U_f-U_i=134 J-87 J=47 J

While the heat added to the system is

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therefore, the work done by the system is

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Answer:

12 km/h

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William's father shaped William's outlook on life when he was younger due to his bravery.

<h3>What was the relationship between William and his father?</h3>

The impact of significant others in the life of a person can not be over emphasized. These significant others often serve as role models and help to develop the individuality and personality of people.

The life of William was shaped quite well by his father because the both of them had a cordial relationship with each other. William's father shaped William's outlook on life when he was younger due to his bravery.

Learn more about William and his father:brainly.com/question/4066623

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