a block of metal has a length of 20cm, breadth 10cm and height 5cm. its mass is 2.7kg. find the density of the metal in g/cm3. find out what the block is made of.
Already answered. See "shakenbhi"
V = 20 * 10 * 5 = 1000cm^3.
2.7kg * 1000g/kg = 2700g.
Density = 2700g / 1000cm^3 = 2.7g/cm^3.
2.7g/cm^3
To find the density of the metal block, we can use the formula:
Density = Mass / Volume
First, let's find the volume of the block:
Volume = Length x Breadth x Height
Volume = 20 cm x 10 cm x 5 cm
Volume = 1000 cm³
Next, let's calculate the density using the given mass and volume:
Density = 2.7 kg / 1000 cm³
However, the given mass is in kilograms, and we need to convert it to grams to match the units of volume (cm³):
Mass = 2.7 kg = 2700 g
Density = 2700 g / 1000 cm³
Density = 2.7 g/cm³
Now, to determine what the block is made of, we can compare the density of the block (2.7 g/cm³) to the densities of known materials. By referring to a density chart, we can identify the material with a similar or matching density.