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Phantasy [73]
3 years ago
15

Three reasons why friction is needed

Chemistry
1 answer:
ivanzaharov [21]3 years ago
3 0

Answer:

1:Without friction, we would not be able to stop walking since we would just keep slipping like on ice.

2:Without friction, objects would just slip and fall with a simple blow of air

3:And finally, without friction, we wouldn't be able to use machinery like cars and etc since they would just fly off

Explanation:

Friction can be a useful force because it prevents our shoes from slipping on the pavement when we walk and stops car tires skidding on the road. When you walk, friction is caused between the tread on shoes and the ground. This friction acts to grip the ground and prevent sliding. Sometimes we want to reduce friction.

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Answer:

\rho =9g/mL

Explanation:

Hello,

In this case, since the density is computed via the division of the mass by the volume:

\rho =\frac{m}{V}

For the given mass of 54 g and volume of 6 mL, the density turns out:

\rho =\frac{54g}{6mL}\\ \\\rho =9g/mL

Best regards.

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