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Bogdan [553]
3 years ago
6

Can someone help me on how to do this?

Physics
1 answer:
Galina-37 [17]3 years ago
8 0

Explanation:

Recall that

1\:\text{micron} = 1\:\mu\text{m} = 10^{-6}\:\text{m} so the speed of the bacterium is

v = \dfrac{6.82×10^{-6}\:\text{m}}{3.5\:\text{s}} = 1.9×10^{-6}\:\text{m/s}

Next, we convert this speed to km/hr. Recall that

1\:\text{km} = 1000\:\text{m}

1\:\text{hr} = 60\:\text{minutes} = 3600\:\text{s}

Therefore,

1.9×10^{-6}\:\dfrac{\text{m}}{\text{s}}×\left(\dfrac{1\:\text{km}}{1000\:\text{m}}\right)×\left(\dfrac{3600\:\text{s}}{1\:\text{hr}}\right)

= 6.8×10^{-6}\:\text{km/hr}

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