Person rolls along a city street
A 1270 kg person rolls along a city street at 25.0 miles per hour, and a grapefruit has a mass of 0.142 kg. What speed must the grapefruit have if its momentum is to be equal in magnitude to that of that person? Give your result in miles per hour.
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A scientist claims to have developed a new method of isolating individual particles, which will enable him to detect their radial position to within 0.20 nm and their radial momentum to within 10 eV/c, simultaneously. Discuss the possibility of hi
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