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mars1129 [50]
3 years ago
14

Which is likely to be more common in our Galaxy: white dwarfs or black holes? Why?

Physics
1 answer:
Nookie1986 [14]3 years ago
4 0

Answer:

White dwarfs are likely to be much more common. The number of stars decreases with increasing mass, and only the most massive stars are likely to complete their lives as black holes. There are many more stars of the masses appropriate for evolution to a white dwarf.

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A plane traveling north at 100.0 km/h through the air gets caught in a 40.0 km/h crosswind blowing west. This turbulence caused
Nonamiya [84]

Answer:

The velocity \vec{v}_{c/g} of the cart with respect to the ground is

\vec{v}_{c/g}=-40\hat{x}+80\hat{y}\, km/h

if we consider North the positive y-direction and East the positive x-direction.

Explanation:

We have for relative motion the following expression:

\vec{v}_{c/g}=\vec{v}_{c/p}+\vec{v}_{p/g}

Where \vec{v}_{c/g} is the velocity of the cart with respect to the ground, \vec{v}_{c/p} is the velocity of the cart with respect to the plane and \vec{v}_{p/g} is the velocity of the plane with respect to the ground.

We find that:

\vec{v}_{c/p}=-20\hat{y}

\vec{v}_{p/g}=-40\hat{x}+100\hat{y}

Thus:

\vec{v}_{c/g}=-20\hat{y}-40\hat{x}+100\hat{y}=-40\hat{x}+80\hat{y} \, km/h

5 0
3 years ago
What does K stand for in Hookes law?
wlad13 [49]
So Hooke's law says that that law is proportional to how much I stretch the spring. Alright. So f=kx<span>. x is the length of the spring now minus its length when it's relaxed and nobody's pulling on it. k is a constant called the spring constant.</span>
3 0
3 years ago
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A heated piece of metal cools according to the function c(x) = (.5)^(x _ 11), where x is measured in hours. A device is added th
Agata [3.3K]
You just need to replace x with 5 in each function

.5^5 - 11
-5-3

.5 ^-6
-8


64 - 8 = 56 A Celcius

Hope this helps
3 0
3 years ago
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Descreva sucintamente como ocorre a formação do raio x pela ampola ou tubo
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Um tubo de raios-X é um tubo de vácuo que converte a energia elétrica em raios-X. A disponibilidade dessa fonte controlável de raios-X criou o campo da radiografia, a imagem de objetos parcialmente opacos com radiação penetrante. Em contraste com outras fontes de radiação ionizante, os raios X são produzidos apenas enquanto o tubo de raios X estiver energizado. Os tubos de raios-X também são utilizados em scanners de tomografia computadorizada, scanners de bagagem de aeroportos, cristalografia de raios-X, análise de materiais e estrutura e para inspeção industrial.

4 0
3 years ago
Does anyone know 08fortnitebeast?
Oduvanchick [21]

Answer:

nah bruh

Explanation:

i just dont know

5 0
3 years ago
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