Recent content by Ekramul Towsif

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Homework Statement X·ray is produced when an electron is incident on a metal surface with ##2x10^8 ms^-1## velocity .Applying this X-ray on the surface of two metals having work function of 5 eV and 2.3eV, photoelectric effect is observed. e by Homework Equations The Attempt at a Solution...

thnx

Homework Statement ##\int_{z=0}^5 \int_{x=0}^4 \Big( \frac{xz}{ \sqrt{16-x^2}} +x \Big)dxdz## Homework Equations double integration The Attempt at a Solution how do i integrate the term ##\frac{xz}{ \sqrt{16-x^2}}## though i know that ##\int x \, dx = \frac{x^2}{2}## pls help me thoroughly :(

pardon me. i faced a similar prblm . could any1 pls xplain what is first octant??