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Evgesh-ka [11]
2 years ago
15

Which statements about our solar system are false?

Physics
2 answers:
morpeh [17]2 years ago
6 0
The second statement is false. The Sun is a star, but not the only star.
8_murik_8 [283]2 years ago
5 0

Answer:

c

and d

Explanation:

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What information can scientists obtain from tree rings?

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When heating a liquid in a test tube, which of the following safety precautions should you take?. . 1.Wear latex gloves.. 2. Hea
marusya05 [52]
4 for sure because you dont want anything spilling on you or others that is harmful.
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An x-ray beam of wavelength 1.4×10−10m makes an angle of 20° with a set of planes in a crystal(the Bragg angle)causing first ord
Gnom [1K]

Answer:

Second order line appears at 43.33° Bragg angle.

Explanation:

When there is a scattering of x- rays from the crystal lattice and interference occurs, this is known as Bragg's law.

The Bragg's diffraction equation is :

n\lambda=2d\sin\theta      .....(1)

Here n is order of constructive interference, λ is wavelength of x-ray beam, d is the inter spacing distance of lattice and θ is the Bragg's angle or scattering angle.

Given :

Wavelength, λ = 1.4 x 10⁻¹⁰ m

Bragg's angle, θ = 20°

Order of constructive interference, n =1

Substitute these value in equation (1).

1\times1.4\times10^{-10} =2d\sin20

d = 2.04 x 10⁻¹⁰ m

For second order constructive interference, let the Bragg's angle be θ₁.

Substitute 2 for n, 2.04 x 10⁻¹⁰ m for d and 1.4 x 10⁻¹⁰ m for λ in equation (1).

2\times1.4\times10^{-10} =2\times2.04\times10^{-10} \sin\theta_{1}

\sin\theta_{1} =0.68

<em>θ₁ </em>= 43.33°

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3 years ago
What force keeps the outside of a bicycle wheel from flying off?
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Answer:

Centripetal force

Explanation:

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2 years ago
Can science answer every question
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No because your opinion and beliefs answers many questions
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3 years ago
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