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AutoPenalti AutoPenalti
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Posts: 318
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5 years ago
The lift experienced by a helicopter involves an action-reaction pair of forces between the
A) helicopter blades and the air.
B) mass of the helicopter and Earth's mass.
C) weight of the helicopter and atmospheric pressure.
D) motion of the helicopter relative to the ground below.
E) any or all of the above
Textbook 
Conceptual Physics

Conceptual Physics


Edition: 12th
Author:
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AhmedsemsemAhmedsemsem
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Posts: 179
5 years ago
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AutoPenalti Author
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5 years ago
Correct Slight Smile TY
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Yesterday
I appreciate what you did here, answered it right Smiling Face with Open Mouth
wrote...

2 hours ago
Thanks for your help!!
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