Calculate the greatest and the least pressure exerted by a metal block of size `20cmxx8cmxx5cm `and having a mass of 50kg.

The resistance of a 0.5M solution of an electrolyte was found to be 30Omega . Calculate the molar conductivity of the solution if the electrods in the cell are 1.5 cm a part and having an area of cross section is 2.0 cm^(2) .

Calculate the osmotic pressure exerted by solution prepared by dissolving 1.5 g of a polymer of molar mass 185000 in 500 ml of water at 37^@C . [R=0.0821 L atm K^-1 mol^-1]

A metal cuboid of mass 'M' kg rests on a table with surface are of 40cm^2 in contact with the table. The pressure exerted by the cuboid on the table surface is 10000 Pa. Value of m is (given that g = 10ms^-2)

A motorcycle is moving with a velocity of 90 km//h and it takes 5 second to stop after the brakers are applied. Calculate the force exerted by the brakers on the motorcycle if its mass alongwith the rider is 200 kg

Suppose the average mass of raindrops is 3.0 xx 10^-5 kg and their average terminal velocity 9 ms^-1 . Calculate hte energy transferred by rain to each square metre of the surface at a place which receives 100 cm of rain in a year.

A block of wood is kept on the table top. The mass of wooden block is 5 kg and its dimensions are 40cm xx20cmxx10cm . Find the pressure exerted by the wooden block on the table top if it is made to lie on the table top with its sides of dimensions : 20cmxx10cm .

A block of wood is kept on the table top. The mass of wooden block is 5 kg and its dimensions are 40cm xx20cmxx10cm . Find the pressure exerted by the wooden block on the table top if it is made to lie on the table top with its sides of dimensions : 40cmxx20cm .

A 2 cm cubical lock of mass 2 kg is lying on the ground What is the pressure exerted by the block on the ground?

Calculate the osmotic pressure of a solution obtained by mixing 100 mL of 1.5 percent solution of urea (mol.mass of 60) and 100 mL of 3.42 percent solution of cane sugar (mol. Mass=342) at 20^@C . (R=0.82 litre atm K^-1 mol^-1)