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3 years ago

1. A car drives 5 miles East and 12 miles North for 10 seconds. What is the total displacement and

Physics

1 answer:

telo118 [61]3 years ago

6 0

Answer:

13m & 17m.

Explanation:

Displacement - Shortest distance between the initial and final point. Here ,

=> Displacement = √ ( 12² + 5² )

=> Displacement = √ 144 + 25

=> Displacement = √ 169

=> Displacement = 13 m

Distance - Total path length covered by the body .

=> Distance = 12m + 5m

=> Distance = 17m

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2 years ago

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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

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Answer:

51.94°

Explanation:

$I_0$ = Unpolarized light

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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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2 years ago

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3 years ago

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