a. 4,44 x 105 N
b. 4,44 x 104 N
c. 4,44 x 103 N
d. 4,44 x 102 N
Mohon Dijawab Dgn Cara
Jawaban:
[tex]\bf c.\ 4,44×10³\ Newton [/tex]
Penjelasan:
[tex]\sf\large Diketahui; [/tex]
[tex]\sf\large{Q_{1} =5×10^{-5}\ C }[/tex]
[tex]\sf\large{Q₂ =8×10^{-5}\ C }[/tex]
[tex]\sf\large{r = 9\ cm = 9×10^{-2}\ m }[/tex]
[tex]\sf\large{k = 9×10⁹\ Nm²/C² }[/tex]
Ditanyakan nilai gaya Coulomb.
Jawab;
Gunakan rumus;
[tex]\sf\large{F.r² = k.Q_{1}.Q₂ }[/tex]
[tex]\sf\large{F} = \LARGE{\frac{k.Q_{1}.Q₂}{r²} }[/tex]
[tex]\sf\large{F} =\Large{\frac{9×10⁹.5×10^{-5}.8×10^{-5}}{(9×10^{-2})²} }[/tex]
[tex]\sf\large F =\Large{\frac{\cancel{^{1}9}.5.8×10^{9-5-5+4}}{\cancel{^{9}81}}=\frac{40}{9}}\large×10³[/tex]
[tex]\sf\large{F = 4,44×10³\ N }[/tex]
Jadi gaya Coulomb-nya sebesar [tex]\sf\large4,44×10³\ Newton [/tex]
diketahui :
q1 = 5 × 10-⁵ C
q2 = 8 × 10-⁵ C
r = 9 cm = 9 × 10-² m
k = 9 × 10⁹ Nm²/C²
ditanya :
besar gaya Coulomb?
Jawab :
F = k. q1.q2/r²
F = 9.10⁹. (5 × 10-⁵)(8 × 10-⁵)/81 × 10-⁴
F = 9.5.8 / 81 × 10³ N
F = 360/81 × 10³ N
F = 4,44 × 10³ N
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