Which statement about cellulose is true?
2 answers:
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Answer:
a) 15.77 m/sec2
b) 13.3 deg
Explanation:
we are given;
Flea force = F1=1.07×10⁻5 N j
Breeze force = F2 = 1.14× 10⁻6 N (-j
mass of flea =6.0 ×10⁻7 kg
So net force on the flea=F1+F2+weight of flea=1.07×10⁻5 j +1.14× 10⁻6 i + 6.0 ×10⁻7 (-j) ×9.8= ma
==> ma = 1.07×10⁻5 j - 0.588×10⁻5 j + 0.114×10⁻5 i
==> ma= 0.482 ×10⁻5 j +0.114×10⁻5 i
==> ma = 0.114×10⁻5 i +0.482 ×10⁻5 j
== a = (0.114×10⁻5 i +0.482 ×10⁻5 j) / 6.0 ×10⁻7
==> a =
==>a= (1.9 j+8.03 i ) m/sec2
mag of a = 15.77 m/sec2
direction angle = tan⁻1(1.9/8.03)=13.3°
Answer:
Diagrams containing answers are attached
Explanation:
Diagram needed to solve the question was missing, So I have attached it with this answer. Also the diagonals of a parallelogram can only be equal to A + B (Not AB as given in your statement).
~~~~~~~~~~~~~~~~~~~~~~~ ANSWER FROM HERE ~~~~~~~~~~~~~~~~~~~~~~
First of all let us understand the law of parallelogram for vector addition. It states that, <em>"If two vectors are along the adjacent sides of a parallelogram, then their resultant is given by the vector that is a diagonal passing through the point of contact of these vectors".</em>
I have attached the diagrams describing the vectors A and B for the cases.
From diagram, it is clear that the magnitude of A and B is equal (balancing horizontal forces) and the resultant A + B is equal to the weight of the stone W (balancing vertical forces). Therefore, we can mathematically write:
A = B - - - - - (i)
& A + B = W - - - - - - (ii)
Putting A = B in equation (ii), we get
B + B = W
2B = W
<u>B = W/2</u>
Putting B = W/2 in equation (i), we get
<u>A = W/2</u>
Hence, magnitudes of both A and B are approximately W/2
