At Cornell, there used to be a narrow suspension footbridge. If you walked acros

Question

At Cornell, there used to be a narrow suspension footbridge. If you walked across it on a windless day, it scarcely swayed at all. But if you jogged across it at just the right speed, you could get it swaying wildly (that's why it's not there any more!). Why? A. Running across the bridge at high speed, your footsteps pushed on the bridge at just the frequency needed to match the natural resonance frequency of the bridge B. Running across the bridge at high speed, your footsteps simply pushed harder on the bridge, causing it to collapse C. Both A and B D. None of the above

Consider a radio wave and a visible light wave. Compared to the visible light wave, a radio wave has a

Higher frequency and longer wavelength

Lower frequency and longer wavelength

Higher frequency and shorter wavelength

Same frequency, but longer wavelength

Higher frequency and longer wavelength

Lower frequency and longer wavelength

Higher frequency and shorter wavelength

Same frequency, but longer wavelength

Explanation / Answer

C.

Higher frequency and shorter wavelength

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