Physics, asked by krishnapandit2145, 8 months ago


An iron bar has mass 390 g and volume 50 cm³.Find the density of iron in (a) gcm–³ (b) kgm–³​

Answers

Answered by Cosmique
10

Answer:

  • Density of Iron is, 7.8 g cm⁻³ and 7800 kg m⁻³.

Explanation:

Given,

  • Mass of Iron bar = 390 g
  • Volume of Iron bar = 50 cm³

To find,

  • Density of Iron in (a) g cm⁻³ and (b) kg m⁻³

Formula required,

  • Formula to calculate density

         Density = Mass / Volume

Solution,

Using formula

→ Density = mass / volume

→ Density = ( 390 g ) / ( 50 cm³ )

→ Density = (390/50) g cm⁻³

Density = 7.8  g cm⁻³

Now,

We have density in g cm³

So, converting it to kg m⁻³

→ Density = 7.8 g cm⁻³

( since, 1 g = 0.001 kg and 1 cm = 0.01 m )

→ Density = 7.8 (0.001 kg) ( 0.01 m )⁻³

→ Density = 7.8 × 0.001 × 1 / ( 0.000001 )  kg m⁻³

→ Density = 7.8 × 1000000 / 1000  kg m⁻³

Density = 7800 kg m⁻³

Therefore,

  • Density of Iron bar is 7.8 g cm⁻³ and 7800 kg m³.
Answered by ishayuchandra
0

Answer:

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