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NISA [10]
3 years ago
13

Which type of galaxy has arms that contain sites of active star formation and start close to a bulge in the center?

Physics
2 answers:
Sergeeva-Olga [200]3 years ago
8 0
Barred spiral is correct answer
Serhud [2]3 years ago
5 0

Answer:

normal spiral I think. I hope this helps

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What level of nitrates is considered clean water?
lana66690 [7]
The U.S. Environmental Protection Agency (EPA) standard for nitrate in drinking water is 10 milligrams of nitrate (measured as nitrogen) per liter of drinking water (mg/L). * Drinking water with levels of nitrate at or below 10 mg/L is considered safe for everyone.
6 0
3 years ago
the red arrow shows the direction that wind from the south pole would travel if earth were not spinning. the wind's destination
MissTica

Answer: It should be A or the very left red circle that you can click on

Explanation: Because when the wind is moving downward and the earth is spinning the spot the wind ends up will never be directly down from where it was to begin with

6 0
3 years ago
it is defined as the intersection of two lines;describes a position in space and has no length, width or height
Ksivusya [100]

Answer:

Could you explain more?

Explanation:

5 0
2 years ago
A Boeing 737 airliner has a mass of 20,000 kg and the total area of both wings (top or bottom) is 100 m2. What is the pressure d
kvv77 [185]

Answer:

The correct option is A = 1960 N/m²

Explanation:

Given that,

Mass m= 20,000kg

Area A = 100m²

Pressure different between top and bottom

Assume the plane has reached a cruising altitude and is not changing elevation. Then sum the forces in the vertical direction is given as

∑Fy = Wp + FL = 0

where

Wp = is the weight of the plane, and

FL is the lift pushing up on the plane.

Let solve for FL since the mass of the plane is given:

Wp + FL = 0

FL = -Wp

FL = -mg

FL = -20,000× -9.81

FL = 196,200N

FL should be positive since it is opposing the weight of the plane.

Let Equate FL to the pressure differential multiplied by the area of the wings:

FL = (Pb −Pt)⋅A

where Pb and Pt are the static pressures on bottom and top of the wings, respectively

FL = ∆P • A

∆P = FL/A

∆P = 196,200 / 100

∆P = 1962 N/m²

∆P ≈ 1960 N/m²

The pressure difference between the top and bottom surface of each wing when the airplane is in flight at a constant altitude is approximately 1960 N/m². Option A is correct

5 0
3 years ago
Read 2 more answers
Greatest to least order
3241004551 [841]

Answer:

Explanation:

FBEDAC

8 0
2 years ago
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