A _____ is a model of an atom in which each dot represents a valence electron

Physics

1 answer:

Rainbow [258]3 years ago

6 0

Answer:

electron dot diagram is the answer to your question.

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How much work does the electric field do in moving a proton from a point with a potential of +145 v to a point where it is -55 v

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The work done by the electric field in moving a charge is the negative of the potential energy difference between the two locations, which is the product between the magnitude of the charge q and the potential difference $\Delta V$ :
$W=-\Delta U=-q\Delta V=-q (V_f -V_i)$
The proton charge is $q=1.6 \cdot 10^{-19}C$ , and the two locations have potential of $V_i = +145 V$ and $V_f=-55 V$ , therefore the work is
$W=-(1.6 \cdot 10^{-19}C)(-55 V-(+145 V))=3.2 \cdot 10^{-17}J$