ABC হল `0.5 xx 10^(-3)` m বাহুর একটি অতি ক্ষুদ্র সমবাহু ত্রিভুজ। `+20` aC চার্জ (attocou

ABC is a very small equilateral triangles of side 0.5 xx 10^(-3) m . A charge of +20 aC (attocoulomb) is placed at the corner A and two charges , each of -10 aC , at B and C . Calculate the potential at a point on the prolongation of AC 2 cm away from A . [Hint: 1 aC (attocoulomb = 10^(-18) coulomb]

0.5xx10^(-4)xx0.3xx10^(-3)xx10

A wheel has moment of inertia 5 xx 10^(-3) kg m^(2) and is making 20 "rev" s^(-1) . The torque needed to stop it in 10 s is….. xx 10^(-2) N-m

At what pH will a 1.0 xx 10^(-3)M solution of an indicator with K_(b) = 1.0 xx 10^(-10) changes colour?