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nadezda [96]
1 year ago
11

A migrating bird can travel at a speed of 30 m/s. How far will it travel in 25 minutes at this speed? Give your answer in metres

(m), and in kilometres (km).
Physics
1 answer:
Nady [450]1 year ago
7 0

Answer:

It will travel 45 km (45000 m)

Explanation:

25 minutes is equal to 1500 seconds (25*60=1500)

distance=speed*time

distance=30m/s * 1500s = 45000 m = 45 km

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Answer:

Yes, it is reasonable to neglect it.

Explanation:

Hello,

In this case, a single molecule of oxygen weights 32 g (diatomic oxygen) thus, the mass of kilograms is (consider Avogadro's number):

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K=\frac{3}{2} \frac{8.314\frac{J}{mol*K}}{6.022x10^{23}/mol}*(23+273)K\\ \\K=6.13x10^{-21}J

In such a way, since the average kinetic energy energy is about 12000 times higher than the potential energy, it turns out reasonable to neglect the potential energy.

Regards.

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