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Volgvan
2 years ago
12

Astronomers discover a bright X-ray source in the Milky Way. They see no counterpart in the optical bands, but it has another st

ar orbiting it, and they determine that the X-ray source has a mass of 10 MSun. What is the most likely origin of the X-rays?
a. a black hole
b. a neutron star
c. a white dwarf
d. a gamma-ray burst
Physics
1 answer:
VladimirAG [237]2 years ago
8 0

Answer:

a. a black hole

Explanation:

X-ray emission from the central degrees of the Milky Way Bright X-ray emission traces the coherent edge brightened shell-like feature, dubbed the northern chimney, located north of Sgr A* and characterized by a diameter of about 160 pc. On the opposite side, the southern chimney appears as a bright linear feature. Bright X-ray emission is observed at high latitude

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2 years ago
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What do these compounds have in common H2O cl2 NH3
nasty-shy [4]

Answer:

All the compounds are covalent compounds . This means that they are formed by the sharing of pair of electrons.

7 0
3 years ago
At the surface of Venus the average temperature is a balmy 460∘C due to the greenhouse effect (global warming!), the pressure is
yanalaym [24]

Answer:

a) 86 atm

b) 86 atm

c) 645 m/s

Explanation:

See attachment for calculations on how i arrived at the answer

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2 years ago
Briefly answer the following questions. a) A clock is mounted on the wall. As you look at it, what is the direction of the angul
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Answer:

Explanation:

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b )  If the angular acceleration of a rigid body is zero, the angular velocity will remain constant.

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3 0
2 years ago
A large helium filled balloon is used as the center piece for a graduation party. The balloon alone has a mass of 222 kg and it
inn [45]

Answer:

The buoyant force is 3778.8 N in upward.

Explanation:

Given that,

Mass of balloon = 222 Kg

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Density of air = 1.20 kg/m³

Density of helium = 0.179 kg/m³

We need to calculate the buoyant force acting

Using formula of buoyant force

F_{b}=\rho_{air}\times V_{b}\times g

Where, \rho_{air} = density of air

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F_{b}=3778.8\ N

This buoyant force is in upward direction.

Hence, The buoyant force is 3778.8 N in upward.

4 0
3 years ago
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