Homework B5 Grade 9
March 2021
Name: M
Saya Nambert
1- The density of fresh water is 1000 kg/m². The pressure gauge on the submarine in
a river was reading 100 kPa when it was at the surface. A sailor notices that the
gauge is now reading 250 kPa. How deep is he? How would this answer change if
the sailor were diving in sea water is slightly denser than fresh water? [3]​

If you place a magnet under a clear dish, and sprinkle iron fillings over it, above what part of the magnet will most of the fillings gather

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

Am i correct on these two physics questions?