Recent content by yosite

Because I don't know how... using what formula to count?... If I'm able to do it. Why I post and ask here...

I have a question.. between electric dipole in Y-axis... will the electric potential and electric field on some points along X-axis can be 0?? if this really can... can you show me the calculation or prove to get this?? THX

hopefully my answer is right... so 1st condition, we can see its real image, so its positive in magnitude. s1 is the distance from image to lense.. s1=+21 and f=15... with the formula.. we can find the s0 (distance object to lens) is 52.5 cm... next for 2nd condition, f=16 cm.. put s0 and f on...

hi... i am new here, but i try to give my answer...but i don't know if its right or wrong.. just try. I assume that 24 mm is the height of the image of the object (girraphe) so its h'.. with h=6m and h'=24mm.. we can get the magnification... m=1/250. and now with m=-d1/d0... "d1" is the...