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Softa [21]
3 years ago
8

Vector a has a magnitude of 12.3 units and points due west. vector b points due north. what is the magnitude of b if a - b has a

magnitude of 15.0 units
Physics
1 answer:
algol [13]3 years ago
8 0

The magnitude of vector b is 8.58 Unit.

Since both the vectors a and b are perpendicular to each other, so we can apply the Pythagoras theorem to calculate the magnitude of the vector b.

Applying the Pythagoras theorem

(a-b)^2=a^2+b^2

15^2=12.3^2-b^2

b=8.58 unit

Therefor the magnitude of the vector b is 8.58 unit.

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Potential energy is transformed into kinetic energy

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5 0
2 years ago
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ddd [48]

Answer:

21.75

Explanation:

n = number of polarizers through which light pass through = 5

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It is given that

\frac{I_{n}}{I_{o}}= 0.277

we know that the intensity of light after passing through "n" polarizers is given as

I_{n} = (0.5) I_{o} Cos^{2n-2}\theta

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inserting the values

0.277 = (0.5)Cos^{2(5)-2}\theta

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7 0
3 years ago
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e. Decreased; Increased

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