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timofeeve [1]
3 years ago
15

Find the work needed to lift a 20-N book 2 m.

Physics
1 answer:
Ulleksa [173]3 years ago
7 0
This question is written wrong, I think u meant 20 kg?
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the hydrometer with the density of liquid to be 800 kg metre per square is the volume of the submerged part of the hydrometer is
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Answer:

Mass = 0.04 Kg

Explanation:

Given the following data;

Density = 800 kg/m³

Volume = 5 * 10^{-5} m³

To find the mass of the object;

Density can be defined as mass all over the volume of an object.

Simply stated, density is mass per unit volume of an object.

Mathematically, density is given by the formula;

Density = \frac {mass}{volume}

Making mass the subject of formula, we have;

Mass = density * volume

Substituting the values into the formula, we have;

Mass = 800 * 5 * 10^{-5}

Mass = 0.04 Kg

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