2 years ago

In order to be considered work, the components that must be present are?..

Physics

2 answers:

AVprozaik [17]2 years ago

5 0

I think the answer is A.

mr_godi [17]2 years ago

4 0

If you need to be sure about this answer don't be I just took the test and this one was correct.

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Two coaxial conducting cylindrical shells have equal and opposite charges. The inner shell has charge +q and an outer radius a,

Leviafan [203]

Answer:

$\Delta V = \frac{q ln(\frac{b}{a})}{2\pi \epsilon_0 L}$

Explanation:

As we know that the charge per unit length of the long cylinder is given as

$\lambda = \frac{q}{L}$

here we know that the electric field between two cylinders is given by

$E = \frac{2k\lambda}{r}$

now we know that electric potential and electric field is related to each other as

$\Delta V = - \int E.dr$

$\Delta V = -\int_a^b (\frac{2k\lambda}{r})dr$

$\Delta V = -2k \lambda ln(\frac{b}{a})$

$\Delta V = \frac{\lambda ln(\frac{b}{a})}{2\pi \epsilon_0}$

$\Delta V = \frac{q ln(\frac{b}{a})}{2\pi \epsilon_0 L}$

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2 years ago

Consider a Cassegrain-focus, reflecting telescope. Images recorded at Cassegrain-focus will be:

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B. Flipped compared to what is in the sky

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Yurem is pulling a wagon across the playground with a force of 10 N. He asks Elianna to help. She agrees and pushes the back of

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Answer:

22 N applied force

Explanation: Since they are both pushing the wagon in the same direction the force adds up.

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Uses of solar cells ?

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Solar cells are used to trap sunlight energy (light energy) and convert it to electric energy for domestic and other purposes.

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Does uniform acceleration means increasing acceleration?

tatiyna

Yes. It means that the acceleration increases at a constant rate, for example 3 mph every second.

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