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Artemon [7]
3 years ago
8

Q:Why does a sheet of sandpaper become warm when you rub it against a wooden board?

Physics
2 answers:
otez555 [7]3 years ago
7 0

Answer: D and friction

Explanation:

PLz brainliest

avanturin [10]3 years ago
4 0

Answer:

D. The mechanical energy of the moving sandpaper is converted to thermal energy

Explanation:

The friction between wood and sandpaper moves quickly and can warm up... the friction causing the heat.

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Between which two points did they travel fastest?
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Answer:

During the section CD , the speed is fastest.

Explanation:

The rate of change of distance is called speed.

Speed = distance / time

Its SI unit ism/s. It is a scalar quantity.

The slope of the distance time graph is given by the speed of the object.

Here, the speed of AB is 30/3= 10 m/s .

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klasskru [66]

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