Answer:
Explanation:
ratio of the forces is equal to the ratio of the surface areas
which is another way of saying the pressure is constant in the system
2000(9.8) / 500 = A / 10
A = 2000(9.8)(10) / 500 = 392 cm²
In question 2
The second line of equation would be 54 = 108 + 10a
get the rest from that
The basic relationship between mass m, volume V and density d is given by

re-arranging the equations and using m=1 kg and

, we find the volume:

and since

, this corresponds to

of air.