Question

a density bottle weighs 0.25N when empty and 0.75N when filled with and 0.65N when filled with alcohol. calculate the volume of the bottle and the density of the water. Take density of water=1000kg/m-3 and g=10m/s-2

Answer 1

`0.00005\,\rm m^3 \,and\, 800\,\rm kg/m^3`

Step-by-step explanation:

Weight of water = 0.75 - 0.25 = 0.5 N

Mass of water = 0.5/10 = 0.05 kg

Hence volume of water is 0.05/1000 = 0.00005
`\rm m^3`

Weight of alcohol = 0.65 - 0.25 = 0.4 N

Mass of alcohol = 0.4/10 = 0.04 kg

Density of alcohol = 0.04/0.00005 = 800
`\rm kg/m^3`