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ariloveshorses
06.10.2019 •
Physics
Aracecar travels at an average speed of 80m/s in a race the total distance of the race is 64m how long does it take the racecar to finish the race
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Ответ:
100 million hydrogen atoms.
Explanation:
To find the number of hydrogen atoms lined side by side that would make the line 1 cm long, we divide the total length i.e 1 cm by the size of each hydrogen atom i.e 0.1 nm.
First we convert all given values to meter
Now we can divide the converted values
No of hydrogen atoms =![\frac{0.01}{1X10^{-10} }](/tpl/images/0203/9010/2263e.png)
= 100,000,000 =![1 X 10^{10} hydrogen-atoms](/tpl/images/0203/9010/94df1.png)
i.e 100 million hydrogen atoms of diameter 0.1 nm would be lined side by side to make a line 1 cm long.