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Misha Larkins [42]
3 years ago
14

Do cats have 9 lives?

Physics
2 answers:
miv72 [106K]3 years ago
7 0
Not really - Its a saying, because cats usually tend to land on their feet, even when they fall from quite a high place. It also originated because cats have agility and a sixth sense which helps them survive.
antiseptic1488 [7]3 years ago
4 0
Yes cats only live up to nine years
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What important event takes place during the interphase of the cell cycle?
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Answer:

--

Explanation:

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3 years ago
A railroad track and a road cross at right angles. An observer stands on the road and watches an eastbound train traveling at 60
mamaluj [8]

Answer:

After 4 s of passing through the intersection, the train travels with 57.6 m/s

Solution:

As per the question:

Suppose the distance to the south of the crossing watching the east bound train be x = 70 m

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To calculate the speed, z(t) of the train as it passes through the intersection:

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\frac{dz(t)}{dt} = \frac{1}{2}.\frac{1}{sqrt{3600t^{2} + 4900}}\times 2t\times 3600

\frac{dz(t)}{dt} = \frac{1}{sqrt{3600t^{2} + 4900}}\times 3600t

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\frac{dz(4)}{dt} = \frac{1}{sqrt{3600\times 4^{2} + 4900}}\times 3600\times 4 = 57.6\ m/s

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