Tutor profile: Vishal G.

If the height of a water column is 600 mm, what will be the height of the mercury column?

The height of the mercury column will correspond to the pressure of the atmosphere. Now, by definition (hwater)(dwater) = (hmercury)(dmercury) where d = density h = height . From the mathematical relationship given, (600 mm) (1 × 103 kg/m3) = (hmercury) (13.6 × 103 kg /m3) hmercury = 600mm [(1 × 103 kg/m3) / (13.6 × 103 kg/m3)] or hmercury = [(600) / (13.6)] mm Hg = 44.1 mm Hg.

The value of x + x(xx) when x = 2 is?

x + x(xx) value of x is given in question so after putting x=2 in given equation we get, 2 + 2(22) = 2 + 2(2 × 2) = 2 + 2(4) = > 2 + 8= 10. Ans.

What is the difference between Call by Value and Call by Reference?

When utilizing Call by Value, you are sending the estimation of a variable as a parameter to a capacity, while Call by Reference sends the address of the variable. Likewise, under Call by Value, the incentive in the parameter isn't influenced by whatever operation that happens, while on account of Call by Reference, qualities can be influenced by the procedure inside the capacity.