Question

6.
7.
The mass of an empty 40 litre petrol tank of a vechicle is 8kg. What will its mass when
filled completely with a fuel of density 0.7g/cc?
A weather forecasting plastic balloon of volume 15m contains hydrogen of density
0.09kg/m, the mass of empty balloon is 7.15kg. Find
(i) the mass of hydrogen in the balloon.
(ii) mass of balloon filled with hydrogen.
nr cynress the distance of star​

Answer 1

Answer:

Answer: 36 kg

Explanation: fuel density = 700kg/m3

volume = 40l = 0.04 m3

mass of fuel = 700 × 0.04 = 28kg

mass when filled = 8 + 28 = 36kg