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3 years ago

ASAP will do brainiest 22 points PLSS HELP

Physics

1 answer:

Nezavi [6.7K]3 years ago

3 0

Answer:

<em>tenis</em>

Tenis applies to each of Newton's 3 Laws of Motion because with the first law if a tenis ball is at rest it will stay at rest unless acted on by an unbalanced force which would be playing tenis in which it would stay in motion. The second law applies since the acceleration at which it is hit times the mass equals the force it has. The third law applies since when hitting a tenis ball back and forth with racquets the reaction may be equal or opposite

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Polarized light is incident on three polarizing filters in a row. The initial intensity of the light is 4 W/m^2. The first filte

DiKsa [7]

Answer:

45°

Explanation:

I = Polarized light after 3 filter = 0.5 W/m²

$I_0$ = Initial light intensity = 4 W/m²

The intensity of polarized light is given by

$I=I_0cos^2Acos^245cos^245\\\Rightarrow A=cos^{-1}\sqrt{\dfrac{I}{I_0cos^245cos^245}}\\\Rightarrow A=cos^{-1}\sqrt{\dfrac{0.5}{4\times cos^245\times cos^245}}\\\Rightarrow A=45^{\circ}$

Hence, the angle relative to the vertical was the light initially polarized is 45°

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3 years ago

A Child stands on the bus Remains Still When The bus is at rest. When the bus moves forward AndeaThe bus is at rest. When the bu

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3 years ago

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Can a vector have nonzero magnitude if a component is zero?

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The vector may have at least two components. These are the x-component and the y-component. The resultant vector (or vector, as referred in this item) is the summation of the components. With this, it is still possible for the vector or resultant to have a nonzero magnitude even if one of its components is zero.

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4 years ago

What Is An Insulator Give An Example

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Points a and b lie in a region where the y-component of the electric field is Ey=α+β/y2. The constants in this expression have t

Drupady [299]

Answer:

V_{a} - V_{b} = 89.3

Explanation:

The electric potential is defined by

$V_{b} - V_{a}$ = - ∫ E .ds

In this case the electric field is in the direction and the points (ds) are also in the direction and therefore the angle is zero and the scalar product is reduced to the algebraic product.

V_{b} - V_{a} = - ∫ E ds

We substitute

V_{b} - V_{a} = - ∫ (α + β/ y²) dy

We integrate

V_{b} - V_{a} = - α y + β / y

We evaluate between the lower limit A 2 cm = 0.02 m and the upper limit B 3 cm = 0.03 m

V_{b} - V_{a} = - α (0.03 - 0.02) + β (1 / 0.03 - 1 / 0.02)

V_{b} - V_{a} = - 600 0.01 + 5 (-16.67) = -6 - 83.33

V_{b} - V_{a} = - 89.3 V

As they ask us the reverse case

V_{b} - V_{a} = - V_{b} - V_{a}

V_{a} - V_{b} = 89.3

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4 years ago