Mohon bantuannya bro bro
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persamaan intensitas (I) berbanding terbalik denga kuadrat jaraknya
I₂/I₁ = (r₁/r₂)²
10⁻¹²/10⁻⁶ = (1/r₂)²
10⁻⁶ = 1/r₂²
r₂ =10³ = 1000
yang ditanyakan pergeserannya
Δr = r₂ - r₁
= 1000 - 1
= 999 m
semoga dapat membantu ...