Ablock of aluminum is dropped into a graduated cylinder with an initial volume of water at 75ml and the volumes rises to 90ml. if the block has a mass of 40.5 g what is its density ?

=2.7 g/cm³

=2700 kg/m³

Explanation:

Density is a ratio of the mass of an object to its volume.

The volume of the named block of aluminium is calculated as follows:

90mL - 75mL= 15mL

15mL = 15 cm³

The mass = 40.5 g

Therefore ρ=m/v

=40.5g/15cm³

=2.7 g/cm³

=2700 kg/m³

altitude, density, pressure

air gets less dense the higher the altitude and also the air pressure is less as altitude rises.