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Anna35 [415]
3 years ago
9

To review the solution to a similar problem, consult Interactive Solution 1.43. The magnitude of a force vector is 86.4 newtons

(N). The x component of this vector is directed along the +x axis and has a magnitude of 72.3 N. The y component points along the +y axis. (a) Find the angle between and the +x axis. (b) Find the component of along the +y axis.
Mathematics
1 answer:
DochEvi [55]3 years ago
8 0

We have a vector \vec F with a magnitude F of 86.4 N.

a. Let \theta be the angle \vec F makes with the positive x-axis. The x-component of \vec F is

F_x=(86.4\cos\theta)\,\mathrm N

and has a magnitude of 72.3 N, so

72.3=86.4\cos\theta\implies\cos\theta=0.837\implies\theta=\boxed{33.2^\circ}

b. The y-component of \vec F is

F_y=(86.4\cos33.2^\circ)\,\mathrm N=\boxed{47.3\,\mathrm N}

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Answer:

a= 18 girls in the class, b= 20 boys and 15 girls, 12 oranges better price.

Step-by-step explanation:

for question a, there are 18 girls in the class, this is how i worked it out:

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if boys are 6 times more than the original ratio, we also have to times the amount of girls by 6.

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