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3 years ago

calculate the electric field strength between two parallel plates separated by 0.50 cm, across which is a potential of 12 volts.

1 answer:

3 0

Formula for Electric Field strength , E = V/d

where V = Voltage in volts, and d = distance of separation in meters.

d = 0.5 cm = 0.005 m, V = 12 V

E = V/d = 12 / 0.005

E = 2400

Electric Field Strength = 2400 Volts/meter

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dolphi86 [110]

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3 years ago

The wavelength of red helium-neon laser light in air is 632.8 nm.

e-lub [12.9K]

(a) $4.74\cdot 10^14 Hz$

The frequency of an electromagnetic wave is given by:

$f=\frac{c}{\lambda}$

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$c=3.0\cdot 10^8 m/s$ is the speed of the wave in a vacuum (speed of light)

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In this problem, we have laser light with wavelength

$\lambda=632.8 nm=6.33\cdot 10^{-7} m$ . Substituting into the formula, we find its frequency:

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(b) 427.6 nm

The wavelength of an electromagnetic wave in a medium is given by:

$\lambda=\frac{\lambda_0}{n}$

where

$\lambda_0$ is the original wavelength in a vacuum (approximately equal to that in air)

$n$ is the index of refraction of the medium

In this problem, we have

$\lambda_0=632.8 nm$

n = 1.48 (index of refraction of glass)

Substituting into the formula,

$\lambda=\frac{632.8 nm}{1.48}=427.6 nm$

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The speed of an electromagnetic wave in a medium is

$v=\frac{c}{n}$

where c is the speed of light in a vacuum and n is the refractive index of the medium.

Since in this problem n=1.48, we find

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lisabon 2012 [21]

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<h3>What is sustainable buildings? </h3>

Sustainable buildings refer to both a structure and the implementation of environmentally responsible and resource-efficient methods.

Sustainable buildings are generally less expensive over the lifetime of the building, due to lower energy costs in production of the materials and lower energy bills,

Hence,option A is correct.

To learn more about the sustainable buildings, refer;

brainly.com/question/8434592

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2 years ago

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Keith_Richards [23]

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