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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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The force of gravity on a person or object on the surface of a planet is called

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Answer:

D. Weight

Explanation:

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3 years ago

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Two satellites A and B orbit the Earth in the same plane. Their masses are 5 m and 7 m, respectively, and their radii 4 r and 7

Dmitry [639]

Answer:

The ratio of their orbital speeds are 5:4.

Explanation:

Given that,

Mass of A = 5 m

Mass of B = 7 m

Radius of A = 4 r

Radius of B = 7 r

The orbital speed of satellite A,

$v_{A}=\sqrt{\dfrac{GM_{A}}{R_{A}}}$ ......(I)

The orbital speed of satellite B,

$v_{B}=\sqrt{\dfrac{GM_{B}}{R_{B}}}$ ......(I)

We need to calculate the ratio of their orbital speeds

Using equation (I) and (II)

$\dfrac{v_{A}}{v_{B}}=\sqrt{\dfrac{\dfrac{GM_{A}}{R_{A}}}{\dfrac{GM_{B}}{R_{B}}}}$

Put the value into the formula

$\dfrac{v_{A}}{v_{B}}=\sqrt{\dfrac{G\times5m\times7r}{G\times7m\times4r}}$

$\dfrac{v_{A}}{v_{B}}=\dfrac{5}{4}$

Hence, The ratio of their orbital speeds are 5:4.

8 0

3 years ago

A swimming pool measures 5.0 m long x 4.0 m wide x 3.0 mdeep.

QveST [7]

Answer:

a) 588,000 N

b) 294000 N

Explanation:

Given that

Density of water = 1000kg/m3

(g) = 9.8m/s2

volume is given as (V)= 5m*4m*3m

a) force will be equal to weight of water

$W = mg = \rho g V = 1000\times 9.8 \times (5*4*3) = 588,000 kg m/s^2$

b) at either end

$P = \frac{F}{A} = P_o + \rho gh$

$dF = PdA$

$dF = \rho g w \int h dh$

$F = \rho g w \frac{h^2}{2}$

$F = \rho g A \frac{h}{2}$ [A = wh]

$F = 1000\times 9.8 \times 5\times 4 \times\frac{3}{2}$

F = 294000 N

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4 years ago

How do land and sea breeze work?

Studentka2010 [4]

by the wind and air flow in the wind

7 0

4 years ago

The valve in the exit pipe is closed . The density of water is 1000kg / m and the gravitational force on free fall of water is 1

Stels [109]

Answer:

300000

Explanation:

p=30x10x1000=30000pascal

7 0

3 years ago

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