某一物理量x做简谐运动,振动式为x= Acos(ωt+φ)-已知t时刻X(t)=A尀2,V(t0>0,则相位为()

A.π/3 B-π/3 C2尀3π D-2尀3π
2024-11-21 19:02:54
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回答1:

A