Answer:
I believe this answer is -They maintain their properties-
Explanation:
Let's see what others say. :)
When the system is in equilibrium, the sum of the moment about a point is
zero.

Reasons:
Length of the beam = l
Mass of the beam = 

Mass of the duck = 
Required:
Force shown by the scale under the right pillar.
Solution:
The location of the duck = On the left end of the beam
When the system is in equilibrium, we have; ∑M = 0
Taking moment about the left pillar, we get;
Clockwise moment = 
Anticlockwise moment = 
At equilibrium, clockwise moment = Anticlockwise moment
Therefore;




Learn more here:
brainly.com/question/12227548
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Windmill- Science
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Hopefully these are right
No B. its false<span> they do not. Lyphnodes are a permant part of the body and you have them in your Neck</span>
1. 898 * 10^27 kg is the answer