What's the linear mass density of a string?

Help on Density Question?

• Okay so i'm a little confused. To figure out the density of an object you dived mass by volume. Correct? Well...can you guys answer these questions for me(: and explain? Thanks! Questions: A loaf of bread has a volume of 2270cm (cubed) and a mass of 454g. What is the density of the bread? Answer: I got 5g/cm(cubed) is this correct? If not, whats the answer? A liter of water has a mass of 100g. What is the density of water? (Hint: 1mL= 1cm(cubed) Answer: I was totally stuck on this answer:/. Someone tell me the answer and explain? Thanks(: A block of wood has a density of o.6g/cm(cubed) and a volume of 1.2cm(cubed) What is the mass of the block of wood. Be careful! Answer: Again, i was stuck on this one? Please explain(: and whats the answer? Thanks! Okay, well thats it(: just 3 easy (well not for me obviously!) questions. Best answer gets full 5 points. (star things!) lmfaoo, okay. Thanks! (:

• Answer:

  Density=mass/volume 1) Density=454g/2270cm^3 =0.2 g/cm^3 2)mass=100g volume=1L 1L=1000mL volume=1000cm^3 density=100g/1000cm^3 =.1g/cm^3 3)density=0.6g/cm^3 volume=1.2cm^3 density=mass/volume mass=density*volume mass=0.6g/cm^3 * 1.2cm^3 mass=0.72g