Question

A cubical block having side length 10cm is floating at the interface of water and oil the block is partially immersed . density of oil is 0.6g/cc and 2cm length of cube is inside water

Answer 1

The pressure above that of the atmosphere at the lower face of the block is ΔP = 800 N//m^(2)

Explanation:

ΔP = ρ(oil) + gh (oil) + ρ(w)gh(w)

ΔP = (600) x (10) x (10 x 10^(-2)) + (1000 x 10 x 2 x 10^(-2))

ΔP = 6000 x 0.1 + 20,000

ΔP = 600 + 200

ΔP = 800 N//m^(2)

Thus the pressure above that of the atmosphere at the lower face of the block is ΔP = 800 N//m^(2)

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Density of a substance at 0 degree c is 10 g/cc and at 100 degree c its density is 9.7 g/cc. the coefficient of linear expansion of the substance is ?

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