Question
A 232 - $-$ b fullback runs 40 yd at $19.8 \pm 0.1$ mih(a) What is his de Broglie wavelength (in meters)?(b) What is the uncertainty in his position?
Step 1
The conversion factors are 0.4536 kg/lb and 0.44704 m/s/mph respectively. So, the mass in kilograms is $232 \times 0.4536 = 105.2352$ kg and the velocity in meters per second is $40 \times 0.44704 = 17.8816$ m/s. Show more…
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$\mathrm{A} 232-\mathrm{lb}$ fullback runs 40 yd at $19.8 \pm 0.1 \mathrm{mi} / \mathrm{h}$ (a) What is his de Broglie wavelength (in meters)? (b) What is the uncertainty in his position?
An alpha particle (mass $=6.6 \times 10^{-24} \mathrm{g} )$ emitted by a radium isotope travels at $3.4 \times 10^{7} \pm 0.1 \times 10^{7} \mathrm{mi} / \mathrm{h}$ . (a) What is its de Broglie wavelength (in meters)? (b) What is the uncertainty in its position?
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