Question

A piece of metal of volume 30cm³ has a mass of 312g.find the density of the piece of metal.

thank you so much​

Answer 1

Answer:

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

Explanation:

Yaar ek baar clearly batao kya bol rhe ho

Answer 2

Answer:

Waah aapko kya lga aap aaoga mera ko pta nhi chlaga

waah great aapko on aana hai aao jesa baat karna hai karo

Aur aapka marje na ho tho mera sa baat na karo

Bahut hurt hua dekh kar on aaye aur baat bhi nhi kiye

Explanation:

compleat the following sentence by using appropriate words from the bracket ( social free rodicals tropicals leaf size)