Quick physics homework help?

Posted on 2014-04-11 06:52:00 in Physics by DOODLE

I need help with these two questions. Thanks.



Several years ago a new bridge was built over the river Thames in London. I was there

visiting my parents and so we decided to take a walk over it. However, whenever

somebody walked over the bridge it started to sway uncontrollably. What was

happening? If someone ran across the bridge, would the same thing happen? Explain



A wave has a frequency of 2 peaks per second and a wavelength of 4cm. Can this be an

electromagnetic wave traveling through a vacuum? Explain.

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