Question

please answer me experts​

Answer 1

Answer:

hi mate.

Explanation:

1.*. Friction cause wear and tear in machine parts.

*.Additional energy is consumed to overcome friction.

2.when we rub our hands together , the action of scraping the surface of your skin back and forth again each other causes the molecules in your skin to move a little faster. The faster the molecules move, the higher the temperature. so the friction of rubbing your hands together make you to feel warm.

3. Aeroplanes have been shaped like birds because birds have light body. Thus, aeroplanes are shaped like birds, having a streamlined structure.

4.*. Make the object more streamlined.

*. Make the surface smoother.

*. Reduce the force acting on the surface.

*. Reduce the contact between the surface.

*. Roll the body, instead of sliding them.

5.There are four types of friction :

*. Static friction .

*.Sliding friction .

*. Rolling friction .

*. Fluid friction.

hope it helps you.

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