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AlexFokin [52]
3 years ago
15

Displacement vector of 4 km north, 2 km south, 5 km north, and 5km south combine to a total displacement of ? A 2 km South b 16

km south c 16 km north d 2km north?
Physics
1 answer:
Andrews [41]3 years ago
3 0
It is C. 16 km north. 
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A mercury thermometer reads 10oC when dipped into melting ice and 90oC
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Two particles, each with charge Q, and a third charge q, are placed at the vertices of an equilateral triangle as shown. The tot
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<em>D. The total force on the particle with charge q is perpendicular to the bottom of the triangle.</em>

Explanation:

The image is shown below.

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Resolving the forces on the particle, we have

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The above indicates that there is no resultant force in the x-axis, since it is equal to zero (N_{x} = 0).

The total force is seen to act only in the y-axis, since it only has a y-component equivalent to 1.732 times the force due to each of the Q particles on q.

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