2. Calculate the wavelength in nm of electrons which have been accelerated from rest through a potential difference of 54V. (15%)

2. (20%) If blocks A and B of mass 0 kg and 6 kg, respectively. are placed on the inclined plane and released. determine the force developed in the link. The coetticients of kinetic friction between the blocks and the inelined plane are μA. =0.1 μB= 0.3. Neglect the mass of the link.