Physics: the candle had 350 J of energy in the chemical store. As it burned, 250 J was transferred by lighting to the surrounding

To solve this exercise it is necessary to apply the considerations made in the Malus Law.This law indicates that the intensity of a linearly polarized ray of light, which passes through a perfect analyzer and vertical optical axis is equivalent to:Where, Light intensity before passing through the polarizerI = Resulting intensity = Angle between the analyzer axis and the polarization axisIn the case where the light is unpolarized the intensity is considered as the intensity of the linearly polarized...

the candle had 350 J of energy in the chemical store.

Ответ:

shortyyashaun

12.03.2021

Physics

Efficiency = 71%

Explanation:

Given the following data:

Output energy = 250 Joules

Input energy = 350 Joules

To find efficiency;

$Efficiency = \frac {Out-put \; energy}{In-put \; energy} * 100$

Substituting into the equation, we have;

$Efficiency = \frac {250}{350} * 100$

Efficiency = 0.7143 * 100

Efficiency = 71.43 ≈ 71%

Therefore, the efficiency of the candle is 71 percent.

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Ответ:

fzzyy

18.01.2020

Physics

To solve this exercise it is necessary to apply the considerations made in the Malus Law.

This law indicates that the intensity of a linearly polarized ray of light, which passes through a perfect analyzer and vertical optical axis is equivalent to:

$I=I_0 Cos^2\theta_i$

Where,

I_0 Light intensity before passing through the polarizer

I = Resulting intensity

$\theta_i$ = Angle between the analyzer axis and the polarization axis

In the case where the light is unpolarized the intensity is considered as the intensity of the linearly polarized light transmitted by the first polarizer is

$I_0 = \frac{I_0}{2}$