Citat:
Ursprungligen postat av fusilier
an alloy is made by mixing together 2 diferent metals. one metal has a density of 2500kg/m-3 and the other has a density of 8000kg/m-3. the alloy is made by mixing together two metals in the ratio 2:1 by volume with the higher proportion being the lower density metal
Edit: Fick det nu "calculate the mass of a sample of the alloy having a volume of .30m3"
p=slutgiltiga densiteten, p1=2500kg/m^3, p2=8000kg/m^3, V=volym p metallen, m=massan
massan r m=(2/3)*V*p1+(1/3)*V*p2
vilket ger densiteten till p=m/V=((2/3)*V*p1+(1/3)*V*p2)/V=
=2*2500/3+8000/3=~4333,3 kg/m^3