Question

Ajuda aí na moral pfv, estou precisando muito

Answer 1

Resposta:

a)

C = εo.A/d

C = 8,85.10-12 . 24.10-3 / 8.10-3

C = 212,4.10-15 / 8.10-3

C = 26,25.10-15 . 103

C = 26,25.10-12 F

b)  

Q = C.U

Q = 26,25.10-12 . 40

Q = 1050.10-12

Q = 1,050.10-9 C

c)

Ep = Q.U/2

Ep = 1,050.10-9 . 40 / 2

Ep = 1,050.10-9 . 20

Ep = 21.10-9 J

d)

C = Q/E.d

26,25.10-12 = 1,050.10-9 / E.8.10-3

26,25.10-12 .  E.8.10-3 =  1,050.10-9

210.10-15.E =  1,050.10-9

E = 1,050.10-9 / 210.10-15

E =  1,050.10-9 / 2,1.10-13

E = 5.10-9 . 1013

E = 5.104 N/C