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Ugo [173]
3 years ago
12

NEED HELP PLEASE ASAP SOMEONE!!!!!!!! TRUE OR FALSE 3 QUESTIONS OWA OWA :3

Physics
2 answers:
icang [17]3 years ago
6 0

Answer:

false

true

false

the galaxies are moving away from each other, not towards each other.

solniwko [45]3 years ago
4 0

Answer:

8. True

9. true

10. false

Explanation:

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Which of the following shows kinetic energy being converted into potential energy?
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3 years ago
Light of wavelength 436.1 nm falls on two slits spaced 0.31 mm apart. What is the required distance from the slits to the screen
kakasveta [241]

Answer:

The correct answer is "4.26 m".

Explanation:

Given:

Wavelength,

\lambda = 436.1 \ nm

or,

  =436.1\times 10^{-9} \ m

Distance,

d = 0.31 \ mm

or,

  =0.31\times 10^{-3} \ m

Distance between the 1st and 2nd dark fringes,

(y_2-y_1) = 6\times 10^{-3} \ m

As we know,

⇒ \frac{d}{L} (y_2-y_1) = \lambda

or,

⇒ L=\frac{d(y_2-y_1)}{\lambda}

By substituting the values, we get

       =\frac{0.31\times 6\times 10^{-6}}{436.1\times 10^{-9}}

       =\frac{0.31\times 6\times 10^3}{436.1}

       =\frac{1860}{436.1}

       =4.26 \ m

3 0
3 years ago
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