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3 years ago

13

When Maria rubbed her solid graphite pencil against paper, it easily left a clear streak on the paper. Which model could represe

nt graphite?

1 answer:

lyudmila [28]3 years ago

8 0

Answer:

B

Explanation:

:p

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How to find average speed in physics

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3 years ago

A potential difference of 107 mV exists between the inner and outer surfaces of a cell membrane. The inner surface is negative r

sergij07 [2.7K]

Answer:

The workdone is $W = 1.712 *10^{-20 } \ J$

Explanation:

From the question we are told that

The potential difference is $V = 107 mV = 107 *10^{-3} \ V$

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$W = Q_{Na^{+}}V$

=> $W = 1.60 *10^{-19 } * 107 *10^{-3}$

=> $W = 1.712 *10^{-20 } \ J$

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