6. A and B are two cement pillars have same mass 1000 kg as shown in figure. Which one produce more pressure on the ground? Calculate. Ans: A= 83.33Pa; B = 166.66Pa] 2m B A 3m 3m please show step by step in copy

a lot of it means it can be "burned" for energy and sold at one price. if it is scarce, the price will go up

speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.

k2s for potassium sulphide