Question

Shown below is a semicircular are with lineat charge density datory 1

Answer 1

solution: charge density = no 8 = 90 +0 AZ 2+R - 72 Cos y = Dado cass= 2²+R² _ r ? RA 27R r2 = z²+R² - 22 R los? r2 = 22+R² +22 R sina 1 Cos o = Z2+r²_R² 22r Change on element do=rdo - where ř=- z î _R(Cosoit sinok) 41fo Ir13 Tordo - Rcoso ORIA, x = " Hitto 1713 En = ſabe como mode Ez - Sat, (, Rub)(2 48690) E-lezla Kdor cz +R$46) do o hit to Irl3 (22+R? +228 Sino) 3/2