JAMB - Physics (1983 - No. 6)
If relative density of a metal is 19, what will be the mass of 20cm3 of the metal when immersed in water?
380g
400g
360g
39g
180g
คำอธิบาย
R.d = 19, therefore, density = 19gcm-3
mass = volume x density
= 20 x 19
= 380g
mass = volume x density
= 20 x 19
= 380g