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Ratling [72]
2 years ago
11

Help pleaseeeeeeeee just need 4 answers

Chemistry
1 answer:
larisa86 [58]2 years ago
8 0

Answer:

Here, acceleration due to gravity(a) is assumed as 10m/s².We can also take it as 9.8m/s²

Explanation:Brick) Weight=m * a=1 * 10=10N\\Bag of books) Mass=f/a=25/10=2.5kg\\Bag of potatoes) Weight=m * a=10 * 10=100N\\Bag of cement) Mass=f/a=400/10=40kg

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When the temperature of a sample of liquid increases , what else increases ?
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Its kinetic energy.

Explanation:

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An increase in the temperature of a liquid causes an increase in the average speed of its molecules. As the temperature of a liquid increases, the molecules move faster thereby increasing the liquid's kinetic energy.

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Explanation:

see answer below in the attached file.

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. If this same atom with 22 protons and 19 electrons were to gain 3 electrons, the net charge on the atom would be
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Protons

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your welcome!

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