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3 years ago

14

The age of the universe is thought to be about 14 billion years. Assuming two significant figures, write this is powers of ten i

n (a) years (b) seconds.

1 answer:

DerKrebs [107]3 years ago

8 0

1.4 times 10 in power of 10

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Sophie [7]

Answer:

a ) 1.267 radian

b ) 1.084 10⁻³ mm

Explanation:

Distance of screen D = 1.65 m

Width of slit d = ?

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Distance of second minimum fro centre y = 2.09 cm

Angle of diffraction = y / D

= 2.09 /1.65

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Angle of diffraction of second minimum

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d = 2 λ / 1.267 = (2 x 687 ) /1.267 nm

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