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liberstina [14]
3 years ago
10

Coal and petroleum are useful because the both have ___ stored in them.

Chemistry
2 answers:
Mariana [72]3 years ago
6 0

Answer:

Energy is the answer. I just took the lesson

God bless!

gizmo_the_mogwai [7]3 years ago
5 0
I think the answer is 4 carbon dioxide
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An airplane travels with a constant velocity of 210 m/s and in the upper atmosphere where the plane is traveling there is a wind
kolezko [41]

Answer:

hello your question is incomplete the options are missing

Determine the resultant velocity for the plane when it is travelling

i) To the east

ii) To the west

answer :i)  270 i

             ii)  -150 i

Explanation:

velocity of Airplane = 210 m/s

wind velocity = 60 m/s to the east

The resultant velocity for the plane when it is travelling  

let the velocity of the wind = V2

           velocity of the plane = v1

i) The resultant velocity for the plane when travelling to the east

Vr = V2 i  + V1 i

Vr= 60i + 210i  = 270i

ii) resultant velocity when the plane is travelling to the west

Vr = - V1 i + V2i

     = -210i  + 60 i = -150 i  

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