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azamat
3 years ago
11

Which equation describes the sum of the vectors plotted below?

Physics
2 answers:
andrew-mc [135]3 years ago
6 0

It's the third one in the picture ...

r = 3x - 2y

Crazy boy [7]3 years ago
5 0

Explanation:

From the attached figure, OAB forms a triangle having,

a = (2,1)

b = (3,-2)

Vector, OA = 2x + y

Vector, AB = x - 3 y

The resultant can be calculated using triangular law of vector addition as :

r=OA+AB

r=2x+y+(x-3y)

r=3x-2y

So, the sum of the vectors plotted below is 3x-2y. Hence, the correct option is (c).

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i) center of gravity (or mass)

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3 0
2 years ago
What type of circuit is illustrated?
Elis [28]
A. Parallel circuit

Short circuits are circuits that is like plugging in a USB into your computer and the other end to your iPhone, so it's not D.

Series circuits can come in all kinds of different shapes, so it's not C.

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Hope this helped.


8 0
3 years ago
Read 2 more answers
The electric eye that prevents an elevator door from closing when you are in the doorway relies upon which physics principle?
goblinko [34]
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3 0
3 years ago
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In a certain electrolysis experiment involving Al3+ ions, 60.2 g of Al is recovered when a current of 0.352 A is used. How many
yawa3891 [41]

Answer:

30.5 x 10³ min.

Explanation:

Atomic weight of aluminium = 27

For the reaction

Al⁺³ + 3e  = Al

3 mole of electron is required by 1 mole of aluminium

3 x 96500 C of charge is required for 27 gram of aluminium

60.2 g aluminium will require

\frac{3\times96500}{27} \times60.2

645.47 x 10³ C

So charge required = 645.47 x 10³ C

Now Charge  = Current x time

Current ( given ) = 0.352A

Time = charge / current = 645.47 x 10³ / .352

=1833 x 10³ s

30.5 x 10³ minutes

6 0
3 years ago
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