Respostas

2014-01-18T11:25:26-02:00
Resposta

 ΔV = Vi*a* ΔT
2,1 = Vi*0,0014*75-25
2,1 = Vi*0,0014*50
2,1 = 0,07Vi
Vi = 2,1/0,07
Vi = 30cm
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