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IRINA_888 [86]
3 years ago
7

What state of matter are the outer planets?

Physics
2 answers:
Svet_ta [14]3 years ago
8 0

Answer: Solid

Explanation: Most of the outer part of our planet is solid. This solid mantle sits on an outer liquid core and a solid inner core.

Leviafan [203]3 years ago
3 0
Solid ;)!!!!!!!!!!!!!!
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What is the difference between a contact force and a non-contact force?
Mkey [24]
Hi, Illiana is correct :)
6 0
3 years ago
A penny is kicked horizontally off the roof of a 10-story building (33.3 m high) and lands 52 m away on the ground. A) what is t
yanalaym [24]

A) The penny was kicked horizontally off the building. By this very statement, the penny had 0 initial vertical velocity.

B) Apply the following kinematics equation to the penny's vertical motion:

D = Vt + 0.5At²

D = vertical distance traveled, t = time, V = initial vertical velocity, A = vertical acceleration

Given values:

D = 33.3m, V = 0m/s, A = 9.81m/s²

Plug in and solve for t:

33.3 = 4.905t²

t = 2.61s

C) The penny fell for 2.61 seconds, therefore it moved horizontally for 2.61 seconds.

v = x/t

v = horizontal velocity, x = horizontal distance traveled, t = time

Given values:

x = 52m, t = 2.61s

Plug in and solve for v:

v = 52/2.61

v = 19.9m/s

D) Let's calculate the penny's vertical speed right before it hits the ground:

v = at

v = final vertical speed, a = vertical acceleration, t = time

Given values:

a = 9.81m/s², t = 2.61s

Plug in and solve for v:

v = 9.81(2.61)

v = 25.6m/s

Use the Pythagorean theorem to find the final speed:

V = √(Vx²+Vy²)

V = final speed, Vx = final horizontal speed, Vy = final vertical speed

Given values:

Vx = 19.9m/s, Vy = 25.6m/s

Plug in and solve for V:

V = √(19.9²+25.6²)

V = 32.4m/s

5 0
3 years ago
Can someone help me
Rainbow [258]
I would have to say hockey it's like soccer... but with ice 
8 0
4 years ago
Para fabricar la bicicleta de un niño pequeño se tiene en cuenta que la fuerza que puede desarrollar es menor que la de un adult
Georgia [21]

Answer:

a) El piñón debe tener 20 dientes.

b) La bicicleta avanza aproximadamente 1,759 metros por cada pedaleada completa.

Explanation:

a) El plato es el engranaje más grande que forma parte del sistema de transmisión, acompañando a la cadena y el piñón integrado a la rueda trasera. Asumiendo que no existen pérdidas por fricción seca y que las condiciones de lubricación del sistema de transmisión son óptimas tal que las pérdidas de potencia son despreciables. Además, supongamos que la bicicleta viaja a velocidad constante, entonces tenemos la siguiente identidad mediante las definiciones de trabajo y potencia:

T_{P}\cdot \omega_{P} = T_{p}\cdot \omega_{p} (1)

Donde:

T_{P} - Torque del plato, en newton-metros.

T_{p} - Torque del piñón, en newton-metros.

\omega_{p} - Rapidez angular del piñón, en radianes por segundo.

\omega_{P} - Rapidez angular del plato, en radianes por segundo.

Sabiendo el hecho que tanto el plato y el piñón experimenta la misma velocidad tangencial, podemos simplificar (1) como sigue:

\frac{T_{P}}{R_{P}} = \frac{T_{p}}{R_{p}} (1b)

Puesto que el radio de cada elemento y el número de dientes son, por separado, directamente proporcionales al número de dientes, modificamos (1b) así y tenemos la siguiente identidad, la cual equivale a su vez a la razón de desarrollo:

\frac{T_{P}}{T_{p}} = \frac{N_{P}}{N_{p}} = \frac{R_{P}}{R_{p}} = \frac{\omega_{p}}{\omega_{P}} (1c)

Donde:

N_{p} - Número de dientes del piñón, sin unidad.

N_{P} - Número de dientes del plato, sin unidad.

Si tenemos que r = 1,4 y N_{P} = 28, entonces tenemos que el número de dientes del piñón es:

r = \frac{N_{P}}{N_{p}}

N_{p} = \frac{N_{P}}{r}

N_{p} = \frac{28}{1,4}

N_{p} = 20

El piñón debe tener 20 dientes.

b) De acuerdo con la relación de desarrollo, por cada revolución realizada por el plato, el piñón realiza 1,4 revoluciones. Entonces, el avance realizado por la rueda trasera (s), en metros, es igual al productor de la relación de desarrollo y la circunferencia de la rueda, es decir:

s = r\cdot 2\pi\cdot R (1)

Donde R es el radio de la rueda trasera, en metros.

Si conocemos que r = 1,4 y R = 0,2\,m, entonces el avance realizado por la rueda trasera es:

s = r\cdot 2\pi\cdot R

s = (1,4)\cdot (2\pi)\cdot (0,2\,m)

s \approx 1,759 \,m

La bicicleta avanza aproximadamente 1,759 metros por cada pedaleada completa.

3 0
3 years ago
What happens when a candle burns?
slega [8]

Answer:

oxygen is used up is the answer

Explanation:

These vaporized molecules are drawn up into the flame, where they react with oxygen from the air to create heat, light, water vapor (H2O) and carbon dioxide (CO2).

5 0
3 years ago
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