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3 years ago

The features of Mercury are named in honor of famous people in which fields of endeavor?

Physics

1 answer:

frozen [14]3 years ago

4 0

Answer:

Writing, Poetry, Philosophy, Painter, Lutheran pastor, Screenwriting, Music, Photography

Explanation:

The International Astronomical Union (IAU) approved the naming of 9 craters to honor artists of various fields. They are:

Alver: Betty Alver was an Estonian writer.

Donelaitis: Kristijonas Donelaitis was a Lutheran pastor

Flaiano: Ennio Flaiano was an Italian screenwriter, playwright, novelist, journalist, and drama critic.

Hurley: James Francis “Frank” Hurley was an Australian photographer and adventurer.

L’Engle: Madeleine L’Engle was an American writer

Lovecraft: Howard Phillips Lovecraft was an American author.

Petofi: Sándor Petőfi was a Hungarian poet.

Pahinui: Charles Phillip Kahahawai “Gabby” Pahinui was a Hawaiian guitar player.

Roerich: Nicholas Roerich was a Russian painter and philosopher.

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Answer:

$T_2=13.5\ N$

Explanation:

Given that,

Speed of transverse wave, v₁ = 20 m/s

Tension in the string, T₁ = 6 N

Let T₂ is the tension required for a wave speed of 30 m/s on the same string. The speed of a transverse wave in a string is given by :

$v=\sqrt{\dfrac{T}{\mu}}$ ........(1)

T is the tension in the string

$\mu$ is mass per unit length

It is clear from equation (1) that :

$v\propto\sqrt{T}$

$\dfrac{v_1}{v_2}=\sqrt{\dfrac{T_1}{T_2}}$

$T_2=T_1\times (\dfrac{v_2}{v_1})^2$

$T_2=6\times (\dfrac{30}{20})^2$

$T_2=13.5\ N$

So, the tension of 13.5 N is required for a wave speed of 30 m/s. Hence, this is the required solution.

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