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Llana [10]
3 years ago
14

Scientists and astronomers have found that in galaxies with central black holes, there are also large star formations near those

black holes. What has this led researches to conclude?
A. that star formations create black holes

B. that black holes and star formations are unrelated

C. that black holes and star formation are related

D. that black holes create star formations

This is for Astronomy not Physics but it didn't give me an Astronomy choice.
Physics
2 answers:
sattari [20]3 years ago
6 0

Answer:B

Explanation: I took the test

sweet-ann [11.9K]3 years ago
5 0

Answer:

B

Explanation:

nothing to do with black holes creating star or related

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A firefighter of mass 81 kg slides down a vertical pole with an acceleration of 3 m/s 2 . The acceleration of gravity is 10 m/s
natima [27]

Answer:

The force of friction that acts on him is

F_k=567N

Explanation:

The firefighter with an acceleration of 3m/s^2 take the gravity acceleration as 10m/s^2 isn't necessary to know the coefficient of friction just to know the force of friction:

F=m*a

F=F_w-F_k

m*a=F_w-F_k

F_w=81kg*10m/s^2=810N

Sole to Fk

81kg*3m/s^2=810N-F_k

F_k=810N-243N

F_k=567N

4 0
2 years ago
I need plz some on help me
Alex
I think the answer is repulsive.... Sorry if I get this wrong? :)
4 0
3 years ago
the two rotating systems shown in the figure differ only in that the two identical movable masses are positioned at different di
svetoff [14.1K]

Answer: the block at the right lands first

Explanation:

7 0
2 years ago
A _____ provides rapid calculus removal by converting very-high-frequency sound waves into mechanical energy and reduces operato
sveticcg [70]

Answer:

The Ultrasonic Scaler

Explanation:

8 0
2 years ago
Answer these questions please and you will get the brain list
Naddika [18.5K]

I am using the equation F=ma (force equals mass times acceleration) to solve these problems.

1. You are looking for force, and have mass and acceleration. You just plug in the values for mass and acceleration to get the force needed.

F=(15kg)(5m/s^2)

F=75N

2. Again, you are looking for force, and just need to plug in the values for mass and acceleration

F=(3kg)(2.4m/s^2)

F=7.2N

3. In this problem, you have force and mass, but need to find acceleration. To do this, you need to get acceleration alone on one side of the equation - divide each side by m. Your equation will now be F/m=a

a=(5N)/(3.7kg)

a=18.5m/s^2

I did not use significant figures. Let me know if you need to do that and need any help on that. Hope this helps!

7 0
2 years ago
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