4 years ago

Focus groups

Physics

1 answer:

Montano1993 [528]4 years ago

4 0

I think the answer is a

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What layer of the atmosphere is made mostly of hydrogen and helium?

ikadub [295]

On Earth, none of the atmosphere is.

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3 years ago

A proton and a deuteron are moving with equal velocities perpendicular to a uniform magnetic field. A deuteron has the same char

Yuri [45]

Answer:

The ratio of the acceleration of the proton to that of the deuteron is 2

Explanation:

For a moving charge in magnetic field, the magnetic force is balanced by force due to its motion. So,

$qvB=ma$

Acceleration of proton,

$a_p=\dfrac{qvB}{m_p}$ .........(1)

Acceleration of deuteron,

$a_d=\dfrac{qvB}{m_d}$ ..........(2)

Since, a deuteron has the same charge as the proton but has twice its mass.

Dividing equation (1) and (2) we get :

$\dfrac{a_p}{a_d}=\dfrac{m_d}{m_p}$

$m_d=2m_p$

$\dfrac{a_p}{a_d}=\dfrac{2m_p}{m_p}\\\\\dfrac{a_p}{a_d}=2$

So, the ratio of the acceleration of the proton to that of the deuteron is 2. Hence, the correct option is (a).

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3 years ago

If sunlight shines straight onto a peacock feather, the feather appears bright blue when viewed from 15° on either side of the i

velikii [3]

Answer:

d = 1.82 10⁻⁶ m = 1.82 μm

Explanation:

The diffraction phenomenon is explained by a similar equation Young's double slit equation

d sin θ = n λ

Where d is the spacing between the bars, θ is the angled diffraction, n in an integer representing the order of diffraction and λ is the wavelength of light

Let's calculate

d = n λ / sin θ

d = 1 470 10⁻⁹ /sin 15

d = 1.82 10⁻⁶ m = 1.82 μm

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Answer:

when they have 8 valence electrons

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Her displacement would be -3 blocks

displacement = final position - initial position

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3 years ago