Can someone explain this formula to me?


Can someone explain this formula to me?

In principle I understand everything, but the electric force (Fel) says:

E Γ— q = u / d Γ— q because E = u / d but.

The final equation then gives d / u.

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In my book it says:

The force that is exerted on a body in an electric field is proportional to its test charge q. The quotient F / q is independent of q and is therefore a measure of the strength of the electric field in every point in space.

But q is also in the formula. Then why is it independent?

We have that in class right now. A ball is on a thread between the plates of a capacitor. My question is, can you calculate the electrical force in the capacitor (Fel) without the voltage?

Didn’t give that in the task, the formula is F = Q * U / d. Someone has no idea how I usually come across “Fel”?

In my book it says:

Field lines are always vertical on conductive surfaces: The mobile charge carriers on the surface are shifted until the force no longer shows any components parallel to the surface.

Can someone explain that to me visually: D Or explain the process normally?

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2H2 + 02 = 2 H2O and H + O = H2.

I know the principle of an equation of atoms that react with each other to form ions or electron pair bonds, if necessary (so I understand the 2nd equation). What I don’t understand, however, is the 1st equation, where suddenly there is a 2 in front of the H. Logically I cannot derive this formula myself. I create the!

Formula occasionally using Lewis notation.

But we can know if there is a 2 in front of the H at the beginning and how you can derive the 2nd formula. (Are there also certain techniques such as the Lewis shrine style)

It says that I have to take the first equation * 2 and the second * (- 3) but why? I do not understand that.

PS: Can someone please explain to me which method I should use for which equation, because I always find it difficult and just try it out.

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Below you can see exercise 6. I don’t understand the following about it. Why is it assumed that Fg = Fel is only because the piece of cotton is floating. I how I don’t understand why sat is exactly what that is. It would be nice if someone could just explain that to me😊

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How do you have to use that now, with a radian measure or what? There is a formula in the appendix, it would be nice if you could tell me what the formula says and how to use it, preferably with a calculation example, then it will be clearer ^^ Thanks for the help in advance.

Good evening, I have a little question:

in physics we should derive the formula: Uh = B * v * b.

The approach is of course clear: Fel = Fl (Fel = electric field force; Fl = Lorentz force)

After that there is this formula: 1) e * E = e * v * B.

This results in: 2) Uh / b = v * B.

My question now: how do you get from Formula 1) to Formula 2) ?

Thanks in advance!!

Hey, I’m just going through math again, because we’re on the subject of stochastics, which I don’t really like. Actually, I understood almost everything in this area (tree diagram, four-field table, Laplace, etc.) but I just discovered a “funny” task:

I understand the principle of tree diagrams, but I believe that the pq formula must also be used here because there is still an unknown x there. However, this is not a quadratic equation, which is why I cannot use it. Does someone understand the task?

Formula can be seen in the picture. It would also be helpful what the er21 with arrow stands for and how I can imagine the vectors in this equation.

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