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3 years ago

What is the difference between electric force and electricity

Physics

1 answer:

FromTheMoon [43]3 years ago

8 0

Answer:

Electrostatic force is force between two charges separated by distance in space while gravitational force is the force between two masses separated by a distance. Electrostatic force is either repulsive or attractive while gravitational force is always attractive

Explanation:

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Answer:

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Explanation:

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3 years ago

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¿Cuál es la frecuencia de una nota musical cuyo periodo es 0,005 s?

AlekseyPX

Answer:

La respuesta sería 200Hz

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3 years ago

What is the desired tone of an instrument called?

Alik [6]

Answer:

Timbre also known as color or tone quantity which is used for music notes sound and tone are mostly know for guitars or pianos .

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Ignoring air resistance and the little friction from the plastic tube, the magnet was a freely-falling object in each trial. If

horsena [70]

Answer:

emf will also be 10 times less as compared to when it has fallen $40 \mathrm{m}$

Explanation:

We know, from faraday's law-

$e m f=-N \frac{\Delta \Phi}{\Delta T}$

and $\Phi=B . A$

So, as the height increases the velocity with which it will cross the ring will also increase. $(v=\sqrt{2 g h})$

Given

$\mathrm{V} 1(\text { Speed at } 40 \mathrm{m})=2 \mathrm{x} \mathrm{V} 2(\text { speed at } 10 \mathrm{m})$

$\sqrt{2 g h_{2}}=2 \times \sqrt{2 g h_{1}}=28.28 \mathrm{m} / \mathrm{s}$

Now, from $40 \mathrm{cm}$

$V_{3}=\sqrt{2 g h_{3}}=\sqrt{2 \times 10 \times 0.4}=2.82 \mathrm{m} / \mathrm{s}$

From equation a and b we see that velocity when dropped from $40 \mathrm{m}$ is 10 times greater when height is 40 $\mathrm{cm}$ so, emf will also be 10 times less as compared to when it has fallen $40 \mathrm{m}$

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3 years ago

Which statement is a characteristic of a concave lens

Free_Kalibri [48]

<em>"A concave lens is thinner at the center than it is at the edges."</em>

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