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Alika [10]
2 years ago
9

All of the following should be considered when designing a study except __________.

Physics
1 answer:
kicyunya [14]2 years ago
8 0

Answer:

A the type of research method to use

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If we assume that the metallic plates are perfect conductors, the electric field in their interiors must vanish. given that the
Svetlanka [38]

here the charge density of metal plate is given as

charge density = \sigma

now the electric field is given Gauss law

\int E. dA = \frac{q}{\epsilon_0}

now here E = constant

so we will have

E. \int dA = \frac{q}{\epsilon_0}

Since total area on both sides of plate will be double and becomes 2A

E. 2A  = \frac{q}{\epsilon_0}

E = \frac{q/A}{2\epsilon_0}

E = \frac{\sigma}{2\epsilon_0}

Now if we will find the electric field inside the metal plate

Then as we know that total charge inside the plate will always be zero

so we have

E = 0

7 0
3 years ago
Please help me:)
Alenkinab [10]

Answer:

The correct option is;

Sphere I is positively charged and sphere II is negatively charged

Explanation:

The charging of the spheres by induction is achieved by introducing a charge to the metal spheres that are insulated from the ground to prevent loss of charge by placing them on insulating stand

The two spheres are brought into contact by the connection of a conducting wire between the spheres I and II

The presence of the positively charged sphere III draws attracts electrons towards sphere II while the net positive charge moves towards sphere I

While the spheres I and II are still polarized, the conducting wire is removed  while the presence of sphere III continues to keep sphere II negative compared to sphere I

After removing the connecting wire, sphere III is removed leaving the excess negative charge on sphere II and the excess positive charge on sphere I

The net charges then evenly redistribute themselves on each sphere creating two oppositely charged spheres.

8 0
3 years ago
Wood, plastic, rubber and glass are ________, which are materials that electricity cannot easily flow through.
irina [24]

Answer:

Insulators

Explanation:

7 0
2 years ago
What is the speed of an electromagnetic wave with a frequency of 100 mhz as it travels through a vacuum?
SCORPION-xisa [38]

Answer:

The speed of the wave with a frequency 100 mhz will be  3\times 10^{8}m/sec

Explanation:

We have given that frequency of light is 100 mhz

We have to find the speed of light in vaccuum

We know that all electromagnetic waves travels in vaccum wth the same speed as the speed of light

And we know that speed of light is equal to 3\times 10^{8}m/sec

So the speed of the wave with a frequency 100 mhz will be  3\times 10^{8}m/sec

6 0
3 years ago
Which is the best example of tropism in plants?
seraphim [82]

Answer:

Here are some examples of tropism in plants : Sunflowers are one of the best examples of positive phototropism , as they always grow facing the sun.

Explanation:

Although some experts consider that perhaps such a clear growth movement should not be considered tropism.

3 0
2 years ago
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