Recent content by Said Ahmad

it seems like two infinity line charge,,, at an infinity line charge, E is ##E = \frac {2 k λ} {a} ## where λ is charge per length, and a is distance perpendicular from the line, there're two oppositely lines, so ##2 E = 15000N/C## , Just for suggestion, by subtituting a, then from magnitude...

Actually your second equation is the simple impuls equation, You can solve the first question with your second equation, just subtitute and solve...

I suggest to use momentum & impuls equation

I think it's easier to use work-energy theorem

Homework Statement Ball A is thrown vertically by speed 40 m/s. After 1 second, Ball B is thrown vertically also by speed 47.5 m/s. What height from ground will they pass each other? ( g = 10m/s2 ) Homework Equations s = vt + ½at2 t = v/g v2 = v02 + 2asThe Attempt at a Solution Time A to...

The block has ƒ = 0.5 × 10 × 0.2 = 1 N, so it has a = -2 m/s2 And the slab has same ƒ, so it has a = ⅓ m/s2 Then v1 block = v2 slab Sorry if I only up to here

I indeed didn't find the answer yet exactly, but process bc is at different pressure, and it should be at different temperature, so there must be some work also

Congratulations...

I think it's more a general question. Cause the surface is a boundary between two different substances.