Jawapan

2016-04-18T17:45:22+08:00
Soalan 6: M1U1+M2U2=M1V1+M2V2 (150×2)+(250×1)=(150×0.5)+(250×?) 550=75+250V 250V=550-75 V=475÷250 V=1.9ms-1#