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MatroZZZ [7]
2 years ago
10

Vector A has a magnitude of 63 units and points west, while vector B has the same magnitude and points due south. Find the magni

tude and direction of a) A + B and b) A - B. Specify the directions relative due west.​
Physics
1 answer:
ozzi2 years ago
4 0

Given :

Vector A has a magnitude of 63 units and points west, while vector B has the same magnitude and points due south.

To Find :

The magnitude and direction of

a) A + B .

b) A - B.

Solution :

Let , direction in north is given by +j and east is given by +i .

So , A=-63i and B=63j

Now , A + B is given by :

A+B=-63i+63j

| A+B | = 63\sqrt{2}

Direction of A+B is 45° north of west .

Also , for A-B :

A-B=-63i-63j

|A-B|=63\sqrt{2}

Direction of A-B is 45° south of west .

( When two vector of same magnitude which are perpendicular to each other are added or subtracted the resultant is always 45° from each of them)

Hence , this is the required solution .

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A long electric cable is suspended above the earth and carries a current of 345 A parallel to the surface of the earth. The eart
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Answer:

0.906 N

Explanation:

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Where I = 345A is the current in the wire, B = 5.6*10^{-5} T is the magnetic magnitude generated by Earth. L = 46.9 m is the cable length. \theta = 88.2^o is the angle between vector B and cable direction.

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3 years ago
Which situation is a result of human activities
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I would answer but you have no choices lol

7 0
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a football player kicks a ball with a mass of 0.42kg. The average acceleration of the football was 14.8 m/s2. How much force did
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Answer:

6.216 N

Explanation:

As for Newton's second law of motion

F=ma

where F= the acting force

           m=subjected mass

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applying F=ma to the football

F=m*a

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5 0
2 years ago
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ExtremeBDS [4]

Answer:

Option (C)

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4 0
3 years ago
Read 2 more answers
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