1.

46. Solve the numerical given below: * (2 Points) A piece of metal of volume 30 cm has a mass of 252 9. Find the density of the meid 84 g/cm O 8.4 g/cm 8.4 kg/m 3 840 g/cm 47. Which of the following values can displacement have? (1 Point​

Answer»

Answer:

Solution:

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

= \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×

1000000

1

m

−3

0.252 kg

=

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

30 m

3

0.252×1000000 kg

=

3

25200

kg m

−3

= 8400 kg m

−3

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