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3 years ago

The basis for defining the length of a day is the fact that question 21 options:

Physics

1 answer:

abruzzese [7]3 years ago

6 0

B.earth rotates on its axis in 24 hours; i.e., it rotates 15° of longitude per hour.

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What effect do shiny metals have on radiant energy?

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Metals conduct heat and reduce the kinetic energy within the components that need to remain cool

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What is the average mass of a neutron?

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Which sector is not part of the circular flow model of the economy ?

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a. government sector

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Unpolarized light is incident upon two ideal polarizing filters that do not have their transmission axes aligned. If 19% of the

Zepler [3.9K]

Answer:

51.94°

Explanation:

$I_0$ = Unpolarized light

$I_2$ = Light after passing though second filter = $0.19I_0$

Polarized light passing through first filter

$I_1=\frac{I_0}{2}$

Polarized light passing through second filter

$I_2=\frac{I_0}{2}cos^2\theta\\\Rightarrow 0.19I_0=\frac{I_0}{2}cos^2\theta\\\Rightarrow cos^2\theta=\frac{0.19I_0}{\frac{I_0}{2}}\\\Rightarrow cos\theta=\sqrt{\frac{0.19I_0}{\frac{I_0}{2}}}\\\Rightarrow \theta=cos^{-1}\sqrt{\frac{0.19I_0}{\frac{I_0}{2}}}\\\Rightarrow \theta=cos^{-1}\sqrt{0.19\times 2}\\\Rightarrow \theta=cos^{-1}\sqrt{0.38}\\\Rightarrow \theta=51.94^{\circ}$

The angle between the two filters is 51.94°

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3 years ago

Identify two forms of friction that <br> oppose the motion of a moving car

babymother [125]

Static friction opposes the movement of car from the state of rest.
Dynamic or kinetic friction opposes the movement of the car when car is running at any speed.

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3 years ago