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melomori [17]
3 years ago
12

I don't have time to sit down and learn this school is almost out and i'm failing PLZ HELP ME SOMEBODY . Chemical reactions happ

en when _____. atoms attract or repel one another heat is created by friction two or more substances are mixed substances are heated or cooled
Physics
1 answer:
dezoksy [38]3 years ago
6 0
Chemical reactions happen when TWO or more molecules interact
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Yakvenalex [24]

Answer:

Centripetal acceleration

Explanation:

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  • That is;

         ac = v²/r

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3 years ago
Which of the following statements is true? there are only about 100 different kinds of atoms that combine to form all substances
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THE ANSWER IS : THERE ARE ONLY ABOUT 100 DIFFERENT KINDS OF ATOMS THAT COMBINE TO FORM ALL SUBSTANCES

Explanation:

3 0
3 years ago
I have 2 bulbs one coverts 60% of energy to light 45% which is the most efficient and what happens to the rest of the energy
Leya [2.2K]

Answer:

The first one (60%)

Explanation:

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