Answer:
m = 20 kg
Explanation:
Given that,
Force, F = 40 N
Acceleration of the object, a = 2 m/s²
We need to find the mass of the object. Let the mass be m.
We know that,
Net force, F = ma
So,

So, the mass of an object is equal to 20 kg.
The answer would be B) 579 students
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Answer:
B
Explanation:Mucous membrane – membranes that line areas of the body that open to the outside, like the mouth or nose
Cutaneous membrane – membranes that cover the skin
Serous membrane – membranes that line the outsides of organs and most closed body cavities, which are liquid-filled spaces in the body that house organs
Synovial membrane – membranes that surround joints, which are places where bones meet and move
Pia and dura mater are types of meniges which are serous membranes.
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