1. A double-slits pattern is view on a screen 1.00 m from the slits. If the third order minima are 25.0 cm apart, determine a) the ratio of wavelength and separation between the slits, b) the distance between the first order minimum and fourth order maximum on the screen.

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