3 years ago

The Sun and other stars orbit Earth.

Physics

1 answer:

ratelena [41]3 years ago

7 0

What is the question?

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Suppose I have a vector that is 7 units long and that makes an angle of +30 degrees from the positive x-axis. I want to add to t

Vinil7 [7]

Answer:

sum of these two vectors is 6.06i+3.5j-3.5i+6.06j = 2.56i+9.56j

Explanation:

We have given first vector which has length of 7 units and makes an angle of 30° with positive x-axis

So x component of the vector $=7cos30^{\circ}=7\times 0.866=6.06$

y component of the vector $=7sin30^{\circ}=7\times 0.5=3.5$

So vector will be 6.06i+3.5j

Now other vector of length of 7 units and makes an angle of 120° with positive x-axis

So x component of vector $=7cos120^{\circ}=7\times -0.5=-3.5i$

y component of the vector $=7sin120^{\circ}=7\times 0.866=6.06j$

Now sum of these two vectors is 6.06i+3.5j-3.5i+6.06j = 2.56i+9.56j

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3 years ago

Damage to the ___________ will most likely cause a person to lose the ability to comprehend language. (2 points)

Marina86 [1]

Answer: Wernicke's Area

Explanation: Wernicke's area is the region of the brain responsible for language <em>interpretation</em>. Broca's area is associated with language <em>production.</em>

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3 years ago

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Lunna [17]

It’s the wavelength I believe

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3 years ago

What is the mass of an object if a net force of 18 N causes it to accelerate at 15 m/s^2?

trasher [3.6K]

Answer:

1.2 kg

Explanation:

F = 18N

a = 15 m/s^2

F = ma

18 = 15m

m = 1.2 kg

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3 years ago

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FIRST ANSWER GETS BRAINLIST!!! Which step is part of a scientific investigation?

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Communicating the findings is part of a scientific investigation! The last option

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