Recent content by jasoncurious

May I know the hint to the other solution? Thanks

Homework Statement Can we use y=vx for non-homogeneous differential equation? Example: yy'=x^3+(y^2/x)→not homogeneous Homework Equations y=vx dy/dx=v+x(dv/dx) The Attempt at a Solution By substituting the equation above: vx(v+x dv/dx)=x^3+(v^2 x^2)/x v^2*x+vx^2...

100g of CO are contained in a weighted piston-cylinder device. Initially, the CO is at 1000kPa and 200°C. It is then heated until 500°C. Determine the final volume of the CO treating it as an ideal gas. This is what my lecturer gave in his solution...

Thanks bro.

Hi guys, I am currently doing a Matlab program for partial pivoting. I looked at my friend's example: % Partial Pivoting for i=1:n-1 for j = i+1:n if (a(j,i)) > (a(i,i)) u=a(i,:); a(i,:)=a(j,:); a(j,:)=u; v=b(i,1); b(i,1)=b(j,1); b(j,1)=v; end end end I was wondering what's the...

Thanks for the help. I'll confirm with my lecturer. I suggest since it's expansion against vacuum, there should be no energy change.

Energy change of apparatus when gas suddenly expands Homework Statement A gas is confined in a cylinder by a piston. The initial pressure of the gas is 7 bar(700kPa), and the volume is 0.10m^3. The piston is held in place by latches in the cylinder wall.The whole apparatus is placed in a...