2 years ago

Why does a combination of red, yellow and blue paint look black?

Physics

2 answers:

kondaur [170]2 years ago

5 0

Because the main/dominant colors (red) and (blue) make a darker mix together

cupoosta [38]2 years ago

3 0

because the combination of colur or paint is mixed

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An emf is induced in a conducting loop of wire 1.22 m long as its shape is changed from square to circular. Find the average mag

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The induced emf in the loop is $7.35\times 10^{-4}\ V$

Explanation:

Given that,

Length of the wire, L = 1.22 m

It changes its shape is changed from square to circular. Then the side of square be its circumference, 4a = L

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The induced emf is given by :

$\epsilon=\dfrac{\d\phi}{dt}\\\\\epsilon=\dfrac{\d(BA)}{dt}\\\\\epsilon=B\dfrac{A'-A}{t}\\\\\epsilon=0.125 \times \dfrac{0.118-0.0930}{4.25}\\\\\epsilon=7.35\times 10^{-4}\ V$

So, the induced emf in the loop is $7.35\times 10^{-4}\ V$

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Why does a combination of red, yellow and blue paint look black?​

Why does a combination of red, yellow and blue paint look black?