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2 years ago

Which of the following CANNOT be

Physics

2 answers:

Nezavi [6.7K]2 years ago

7 0

Answer:

Well, there is a kind of magnet to pick up a coin.. I think you can pick up a needle with one too.. I think safety pins. depending on what its made of though.

Explanation:

Alex73 [517]2 years ago

6 0

Answer:

cork cannot be picked with a magnet

Explanation:

i hope that helps

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Current that reverses direction in the regular pattern is called an alternating current, abbreviated as 'AC'.

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The electric field strength between the plates of a simple air Capacitor is equal to the voltage across the plates divided by th

exis [7]

Answer:

$d=\frac{112\,V}{1100\,\frac{V}{cm}} \\d=\frac{28}{75} \,cm=0.101818.. \,cm$

Explanation:

Recall that the equation for the electric field intensity between the plates of a capacitor is given by:

$E=\frac{\Delta V}{d}$

where E is the electric field, $\Delta V$ is the voltage across the plate of the capacitor, and "d" is the separation (distance) between the capacitor's plates.

So we need to solve for the distance in the equation above, but also make sure that the units for electric field and potential difference are in agreement. We then write the electric field strength in V/cm :

1.1kV/cm = 1100 V/cm

Now in the equation:

$E=\frac{\Delta V}{d}\\1100\,\frac{V}{cm} =\frac{112\,V}{d\\}\\d=\frac{112\,V}{1100\,\frac{V}{cm}} \\d=\frac{112}{1100} \,cm\\d=\frac{28}{75} \,cm=0.101818.. \,cm$

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3 years ago