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lutik1710 [3]
3 years ago
14

Please help for 30 points write at least 3 rules that summarize how magnets move objects.

Physics
2 answers:
guajiro [1.7K]3 years ago
5 0
1-long, straight wires, 2-free moving charges in magnetic fields, and 3-the solenoid rule (which are loops of current)
IrinaK [193]3 years ago
3 0

Answer:

Magnets work by using Earth's magnetic pull.

Explanation:

Magnets move objects because they are made of steel or metal. And for that reason, they can stick to objects that are metal.

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Assume that the electric field E is equal to zero at a given point. Does it mean that the electric potential V must also be equa
lyudmila [28]

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In electrostatics, the electric field \vec{E} is related to the gradient of the electric potential V with :

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\vec{E} (\vec{r}) = -  (\frac{\partial k}{\partial x} , \frac{\partial k}{\partial y } , \frac{\partial k}{\partial z})

\vec{E} (\vec{r}) = -  (0,0,0)

This is not the only case in which we would find an zero electric field, as, any scalar field with gradient zero will give an zero electric field. For example:

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give an electric field of zero at point (0,0,0)

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