The approximate difference in pressure between the two balls is 1961.4 pascals.
The difference in pressure between the two balls is expressed by a formula derived from the concept of manometric pressure ([tex]\Delta p[/tex]), in pascals:
[tex]\Delta p = \rho\cdot g\cdot \Delta h[/tex] (1)
Where:
If we know that [tex]\rho = 1000\,\frac{kg}{m^{3}}[/tex], [tex]g = 9.807\,\frac{m}{s^{2}}[/tex] and [tex]\Delta h = 0.2\,m\,(20\,cm)[/tex], then the difference in pressure is:
[tex]\Delta p = \left(1000\,\frac{kg}{m^{3}} \right)\cdot \left(9.807\,\frac{m}{s^{2}} \right)\cdot (0.2\,m)[/tex]
[tex]\Delta p = 1961.4\,Pa[/tex]
The approximate difference in pressure between the two balls is 1961.4 pascals.
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