Posted by **bob** on Thursday, September 16, 2010 at 6:54pm.

A 281 lb fullback runs the 40 yd dash at a speed of 23.0 ± 0.1 mi/h.(a) What is his de Broglie wavelength (in meters)?(b) What is the uncertainty in his position?

i determined the wavelength correctly, but how do you determine the uncertainty

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