A straightforward method of finding the density of an object is to measure its mass and then measure its volume by submerging it in a graduated cylinder. What is the density of a 240-g rock that displaces 89.0 cm3 of water? (Note that the accuracy and practical applications of this technique are more limited than a variety of others that are based on Archimedes’ principle.)
ρ= m/V =0.240/89•10⁻⁶=2696 kg/m³
A block of wood has a mass of 340g .what is its weight ? ( g = 10n kg-1)
To find the density of the rock, you can use the formula:
Density = Mass / Volume
Given:
Mass of the rock = 240 g
Volume of water displaced = 89.0 cm^3
Plug in the values into the formula:
Density = 240 g / 89.0 cm^3
Simplify the units:
Density = 2.70 g/cm^3
Therefore, the density of the rock is 2.70 g/cm^3.
To find the density of the rock, you need to use the formula:
Density = Mass / Volume
Given that the mass of the rock is 240 g and it displaces 89.0 cm3 of water, you can substitute these values into the formula:
Density = 240 g / 89.0 cm3
To calculate the density, you need to divide the mass (240 g) by the volume (89.0 cm3):
Density = 2.70 g/cm3
Therefore, the density of the rock is 2.70 g/cm3.