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  • Usuário do Brainly
2014-07-06T17:56:19-03:00
Q1=3uC
Q2=-4uC

10)

a)

E1= K . Q / d²
E1= 9.10^9.3.10^-6/0,1²
E1=27.10³/10-²
E1=27.10^5

E2= 9.10^9.4.10^-6/10-²
E2=36.10³/10-²
E2=36.10^5

Er²=E1²+E2²
Er²=36².10^10 +27².10^10
Er=45.10^5 N / C


b)

V= K . Q / d
V=9.10^9.3.10^-6/0,1
V=27.10³/10-¹
V=2,7.10^5 V

V=9.10^9. - 4.10^-6/0,1
V=-36.10³/10-¹
V=-3,6.10^5

Vr=V1+V2
Vr=-0,9 .10^5 V

vô fazê só a 10 q to com preguiça

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