Answer:
Uncertainty in speed = \[\frac{4}{100}\times
90=3.6m{{s}^{-1}}\]
\[\Delta x\Delta \upsilon \ge
\frac{h}{4\pi m}\]
\[\Delta x\ge \frac{h}{4\pi
m\Delta \upsilon }\]
\[\ge \frac{6.626\times
{{10}^{-34}}}{4\times 3.14\times 0.01\times 3.6}\]
\[\ge 1.46\times {{10}^{-33}}m\]
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