a) The x-coordinate of the center of gravity is 
.
b) The y-coordinate of the center of gravity is .
<h3>Determination of the coordinates of the center of gravity</h3>
Let suppose that each square has an <em>uniform</em> density, the coordinates of the center of gravity of each square with respect to the origin are, respectively:
The center of gravity of the <em>entire</em> system is found by applying definition of <em>weighted</em> averages:
Where 
, 
, 
and 
are weights of the each square, in newtons.
Now we proceed the coordinates of the center of gravity of the entire system:
a) The x-coordinate of the center of gravity is .
b) The y-coordinate of the center of gravity is .
To learn more on center of gravity, we kindly invite to check this verified question: brainly.com/question/20662119
Katarina is right. The explanation correct is because r is a distance and always positive, from she can see that when y is negative, sinθ is also negative.
<h3>What is the explanation for the above?</h3>
For every interval of odd multiple of π, to next even multiple of π, sinθ will be negative.
Mathematically,
Sin θ will be negative in
[(2n +1)π, (2n + 2)π]
Where, n is any integer (Positive or negative).
Hence, it is right to state that Katarina is right. The explanation correct is because r is a distance and always positive, from she can see that when y is negative, sinθ is also negative.
Learn more about Sine:
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Full Question:
Dacia Asks Katarina To Tell Her What The Values Of Y Are That Can Make Sine Negative. Which Of Katarina's Replies Is Correct?
I would say B because different people see famous people in different ways. like a famous person would just see them self as a person whereas a non-famous person would see them as amazing and superior to others.
