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Ek1 = Ek
v1 = v
v2 = 3v
ditanyakan :
Ek2 = ?
jawab :
Ek2/Ek1 = v2²/v1²
Ek2/Ek1 = (3v)²/v²
Ek2/Ek1 = 9
Ek2 = 9 Ek 1
v = v1
Ek = Ek1
v' = 3v1
Ditanya Ek2......?
jawab: