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Question
Submitted by lynnstewart95 on Sun, 2012-03-18 14:18
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an object has a mass of 615 grams and a volume of 105 cm2 what is the density of the...

an object has a mass of 615 grams and a volume of 105 cm2 what is the density of the object

Answer
Submitted by Doctor on Mon, 2012-03-19 10:49
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I assume mass (m) of 615 g and volume (V) of 105 (cm)^3. The density then is: m/V=5.857 g/(cm)^3 = 5857 kg/m^3

Answer
Submitted by Andrein on Sun, 2012-03-18 15:10
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Complete answer

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The formula xxx density xxx
ρ = m/V, where
m is the mass of the object
V is the volume of the object
.
Our object has a mass of:
m = 615 g
and a Volume of:
V = 105 cm^3
That means our object's density is:
ρ = m/V =>
ρ = 615 g/105 cm^3 =>
ρ ≈ 5.857143 g/cm^3
.
In SI the unit for density is kg/m^3.
1 gram = 0.001 kg = 10^(-3) kg
1 cm^3 = (0.01)^3 m^3 = 10^(-6) m^3
.
So, our density of ρ ≈ 5.857143 g/cm^3 is in SI:
ρ ≈ 5.857143 * 10^(-3)/10^(-6) kg/m^3 =>
ρ ≈ 5.857143 * 1/10^(-3) kg/m^3 =>
ρ ≈ 5.857143 * 10^3 kg/m^3 =>
ρ ≈ 5857.143 kg/m^3
.
.
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