Finding the density of a 3.85 kg trophy

[Luke White]

Find the density

 

[Luke White]

Find the density of the throphy

 

[rock.freak667]

What is the definition of density?

 

[Luke White]

mass per unit volume as i know .

 

[rock.freak667]

mass per unit volume as i know .

Right, so if you are given a mass of 3.85 kg and a volume of 480 cm³, what would be the mass per unit volume?

 

[Luke White]

how can you work it out?

 

[rock.freak667]

how can you work it out?

Were you taught the concept of density and the formula associated with it?

If meter per second means 1 m divided by 1 s, what what mass per unit volume give?

 

[Luke White]

its p=m/v how can I find the density?

 

[rock.freak667]

its p=m/v how can I find the density?

what do m and v represent in your equation?

 

[Luke White]

mass and volume...

 

[rock.freak667]

mass and volume...

Good. And you are told mass = 3.85 kg and volume = 480 cm³, so if you put those values into your formula, what do you get?

 

[Luke White]

I have to divide them? Then it says that gold has a density of 19,000kg/m3 . Is the throphy made out of real gold

 

[rock.freak667]

I have to divide them? Then it says that gold has a density of 19,000kg/m3 . Is the throphy made out of real gold

Yes you have to divide them. If you are given those values and your density doesn't match up to 19,000 kg/m³, then it isn't made out of real gold.

 

[Luke White]

so 3.85 divide 480 = 8.02083333 <--- density... so not real gold

 

[rock.freak667]

so 3.85 divide 480 = 8.02083333 <--- density... so not real gold

Yes, but don't forget your units. You divided kg by cm³, so your units are kg/cm³