Question

Please solve Q5 part (a) and (b)

Answer 1

it is because helium gas is light and it is only filled in balloons or firdge

ii) it is because of the surface area !

and where it works

Answer 2

hey mate

here is your answer

a)Toy ballons filled with hydrogen rises to the ceing because hydrogen is the lightest gas .

b)Tractors have broad tyres because, the pressure depends on surface and as more the surface area is the less will be the pressure .

yours answers are above buddy