numerical testing

Chromium has mono atomic body-centred cubic structure. Its cell edge is 300 pm, what is its density? (Molar mass of Cr = 52 g mol - 1 , Avogadro number N = 6.023 x 10 2 3 mol..

01. A body of mass 2kg is raised to a height of 25m. Calculate the potential energy possessed by the body. Solution: Mass of the body (m) = 2kg Height (h) = 25 m Potential energy of the body = mgh 02. A bag of rice weighs 75kg. To what height is it raised if the work done in lifting it is 4900 J. S..

01. An object of mass 5 kg is lifted up through a distance of 2 meter. What is the work done? Solution: W = F x s Also, force acting on the object is F = mg [Newton's second law of motion] Mass of the object (m) = 5 kg Distance moved = 2m Therefore, Work done = F x s 02. How much work ..

01. The Earth's gravitational force causes an acceleration of 5 m/s 2 in a 1 kg mass somewhere in space. How much will the acceleration of a 3 kg mass be at the same pla..

01. A body of mass 2 kg is raised to a height of 25 m. Calculate the potential energy possessed by the bo..

01. An object of mass 5 kg is lifted up through a distance of 2 metre. What is the work don..

What is the distance of closest approach to the nucleus of an alpha particle which undergoes scattering by 180 o in the Gelger- Marsden experimen..

Calculate the value of constan..

The second member of Lyman series in hydrogen spectru..

Calculate the packing fraction of a partic..