Explain why dissolving is a physical change

Physics

2 answers:

zloy xaker [14]3 years ago

8 0

Because the kinetic energy start to decrease, for example if we put sugar in a high temperature tea and we shake it what will happen to the sugar will the kinetic energy increase or decrease, it will probably decrease, just like us the people when we enter a cold room and we have a hot temp.

Natalija [7]3 years ago

5 0

It's a physical change because it is changing from one matter to another.

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Answer:

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vector with direction equal to the axis X.

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We use the Gauss Law and the superposition law in order to solve this problem.

Superposition Law: the Total Electric field is the sum of the electric field of the first infinite sheet and the Electric field of the second infinite sheet:

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Thanks Gauss Law we know that the electric field of a infinite sheet with density of charge σ is:

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$E_{total}=(\sigma_1+\sigma_2)/(2\epsilon_o)=(-2.7*10^{-6}+88*10^{-6})/(2*8.85*10^{-12})=4.82*10^6N/C$

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