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Charra [1.4K]
2 years ago
15

What is the apparent brightness of a star?

Chemistry
1 answer:
Rzqust [24]2 years ago
3 0

Answer:

it's bright where you can see it it's not that bright compared to the sun from Earth it's really not so bright

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Los hermanos Ana Victoria y José Leonardo están patinando en el hielo, con 25 y 20 kg respectivamente de masa, si Victoria empuj
andreyandreev [35.5K]

Utiliando las leyes de Newton encontraremos que la aceleración de Ana es -1.6 m/s^2.

La segunda ley de Newton dice que:

F = m*a

Fuerza es igual a masa por aceleración.

La tercera ley de Newton dice que cuando dos objetos interactuan, cadan objeto ejerce una fuerza de <u>igual magnitud pero opuesta direccion</u> en el otro.

Ahora veamos como aplicar esto.

Sabemos que la niña empuja al niño, asumamos que con una fuerza F.

Tendremos entonces la ecuación:

F = 20kg*(2m/s^2) = 40N

Y por la tercer ley de Newton, esta misma fuerza (pero en opuesta dirección) se aplica a la niña, entonces tendremos:

-40N = 25kg*a

-40N/25kg = a = -1.6 m/s²

La aceleración con la que retrosede la niña es -1.6 m/s²

Sí quieres aprender más, puedes leer:

brainly.com/question/17123407

3 0
3 years ago
What is the charge of Fe(OH)3?
klasskru [66]
The charge for this compound is positive. For Fe, it's charge is positive 3, and for OH, it's charge is negative 1. You would then criss cross the charges of each and come out with Fe(OH)3. I hope this helped!! :)
6 0
3 years ago
Please answer this question correctly i really need it. Be serious.
kenny6666 [7]

Answer:

I think A but to be fair if you get it wrong I am a 6th grader

Explanation:

6 0
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In a molecule of water (H2O), two hydrogen atoms are each bonded to one oxygen atom. What forms each of the two bonds?
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The two bonds are formed with the help of covalent bonds
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Which reaction shows decomposition?
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I think first one..........

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