October 2018 2 25 Report
Seorang petualang berteriak didepan sebuah gua sepanjang 2000m. gema terdengar setelah 4s. maka besarnya cepat rambat bunyi adalah...
a. 1.500m/s
b. 1.000m/s
c. 150m/s
d. 100m/s
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