Question

17. Calculate the height of water column which will exert on its base the same pressure as the
70 cm column of mercury. Density of mercury is
13.6 g cm^-3 .​

Answer 1

Pressure at the place remains the same for both water and mercury.

Pressure exerted by mercury = density of mercury * height of mercury column * g (acc. due to gravity)

=> Pressure exerted by mercury = 13.6 * 70 * g

=> Pressure exerted by mercury = 952 g.

Pressure exerted by water = density of water * height of water column * g (acc. due to gravity)

=> Pressure exerted by water = 1 * h *g

=> Pressure exerted by water = h g.

Now, According to question,

952* g = h* g

=> h = 952 cm.

Therefore, the height of water column which will exert on its base the same pressure as the 70 cm column of mercury is 952 cm.

Answer 2

Answer:

9.52m

Step-by-step explanation:

$l e t height be h \\ so h = 13.6*70=952 or 9.52$