A ball of mass 10 kg is dropped from the roof of a building of height 138 m strikes the ground with a speed V1. A second ball of mass 25 kg is dropped from the height 51 m and strikes the ground with a speed v2. What is the ratio K/K2, where K, and K2 are the kinetic energies of the first and second ball at the moment when they hit the ground?

Asquare 1m x 1m plate is shown below. all four of its edges are kept at 0 co. at t=0the temperature distribution is given by: y xtsins n75)=.a) using separation of variables determine the temperature distribution t(x,y,t)along the plate at any time t.b) discretize the heat conduction equation +=22222 txtusing a second-order centered difference scheme for the two second derivatives and a first-order forward euler scheme for the first derivative. using von neumann stability analysis, determine the stability criterion for the proposed discretization scheme in terms of , hand t. solve for the maximum allowable time step tmax