Physics, asked by thanishka1209, 1 month ago

A piece of brass of volume 20 cm3 has a mass of 252 g. Find the density of brass in i) g/cm3 and ii) kg/m3​

Answers

Answered by OoAryanKingoO78
60

Answer:

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A piece of brass of volume 30 cm3 has a mass of 252 g. Find the density of brass in (i) g cm-3, (ii) kg m-3

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mass M of the piece of brass = 252 g Volume of the piece of volume = 30\ cm^330 cm

mass M of the piece of brass = 252 g Volume of the piece of volume = 30\ cm^330 cm 3

mass M of the piece of brass = 252 g Volume of the piece of volume = 30\ cm^330 cm 3

(i) density d = \frac{M}{V}

V

M

</p><p>= \frac{252}{30}=8.4\ g\ cm^{-3}

30

252

=8.4 g cm

−3

since, M = 252g = 0.252 kg

V = 30\ cm^330 cm

3

=

30\times10^{-6}\ m^{-3}30×10

−6 m−3

Density d = \frac{0.252\ kg}{30\times10^{-6}\ m^{-3}}=\frac{0.252\ kg}{30\times\frac{1}{1000000}m^{-3}}

30×10

−6

m

−3

0.252 kg

= 30× 10000001

m −3

0.252 kg

=

\frac{0.252\times1000000\ kg}{30\ m^3}=\frac{25200}{3}kg\ m^{-3}\ =\ 8400\ kg\ m^{-3}

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