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rjkz [21]
4 years ago
9

true/false: a single atom of an element in molecular and empirical formulas does not require a subscript

Physics
1 answer:
Lilit [14]4 years ago
7 0

That's true. 

If a single atom of an element in a molecule required a subscript,
then water would be  H₂O₁ , and salt would be  Na₁Cl₁ .

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3 years ago
A disk has 128 tracks of 32 sectors each, on each surface of eight platters. The disk spins at 3600 RPM and takes 15 ms to move
Serga [27]

Answer:

the longest time needed to read an arbitrary sector located anywhere on the disk is 2971.24 ms

Explanation:

 Given the data in the question;

first we determine the rotational latency

Rotational latency = 60/(3600×2) = 0.008333 s = 8.33 ms

To get the longest time, lets assume the sector will be found at the last track.

hence we will access all the track, meaning that 127 transitions will be done;

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also, we will look for the sectors, for every track rotations that will be done;

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Total Time = 2971.24 ms

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