Physics Unit22: Electromagnetic Waves (id: 50828327c)

本题目来源于试卷: Physics Unit22: Electromagnetic Waves，类别为 通用国际物理

[单选题]
What is the wavelength of a radio wave signal transmitted a+3nz+dm2q *ys3es yui t a frequ .2 c/cg87lgq 6bnqo-ojuq8 tmency of 7.2 MHz? .8/82mgqqtn7 bgo6cq-c j oul

A. $42 \; m$
B. $4.2 \; m$
C. $29 \; m$
D. $0.024 \; m$


参考答案:  A


本题详细解析: 暂无

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