Q39Short answer
Table-tennis ball has a mass 10 g and a speed of 90 m/s. If speed can be measured within an accuracy of 4% what will be the uncertainty in speed and position?
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Uncertainty in the speed of ball = 3.6 ms 100 100 Uncertainty in position = 4 mv 25 Structure of Atom –34 6.626 10 Js = –3 –1 –1 4 3.14 10 10 kg g 3.6 ms = 1.46 × 10–33 m