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alekssr [168]
3 years ago
5

Find the mass of a book that has a weight of 14.7 newtons

Mathematics
1 answer:
AysviL [449]3 years ago
5 0
If a book has a weight of 14.7 Newtons, then its mass would be 1.50 kilograms.
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Step-by-step explanation:

It means average weight of zucchinis is 1 pound because 2 - 1 = 1

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It takes 23 minutes for 6people to paint 6 walls.
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The magnitude and direction of two forces acting on an object are 100100 ​pounds, S7878degrees°​E, and 5050 ​pounds, N5353degree
amm1812

Answer:

  138.06 lb N86.1°E

Step-by-step explanation:

There are several ways you can work this. One of the most straightforward is to resolve each vector into its north and east components, add those, and then covert the result back to magnitude and direction.

A diagram can help immensely.

We note that S78°E is the same as E12°S. Since we're used to seeing the coordinate system with the +x axis aligned with east, it can be convenient to think of the first force as 100 lb at -12°.

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The the magnitude of the resultant is computed using the Pythagorean theorem:

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and the angle is computed using the arctangent function. Here, our diagram tells us the angle is in the first quadrant, so is positive (relative to +x, or East).

  ∠R = arctan(9.300/137.747) ≈ 3.9°

__

We want to express the answer in terms similar to the way the given forces are expressed, so we want the angle relative to north. The resultant is then described by ...

  R = 138.06 lb at N86.1°E

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