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Tcecarenko [31]
3 years ago
7

The thymus gland plays an important role in the developing immune system of a child. It makes infection-fighting lymphocytes cal

led
.
Physics
1 answer:
dedylja [7]3 years ago
6 0

Answer:

give brainliest please

Explanation:

T- lymphocytes or T cells

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Savanna regions developed during the Triassic period. true or false
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Savanna regions developed during the Triassic period. is true
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3 years ago
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Two +1 C charges are separated by 30000 m, what is the magnitude of<br> the force?
Kipish [7]

Answer:

<em>The magnitude of the force is 10 N</em>

Explanation:

<u>Coulomb's Law</u>

The electrostatic force between two charged objects is directly proportional to the product of their charges and inversely proportional to the square of the distance between the two objects.

Written as a formula:

\displaystyle F=k\frac{q_1q_2}{d^2}

Where:

k=9\cdot 10^9\ N.m^2/c^2

q1, q2 = the objects' charge

d= The distance between the objects

We have two identical charges of q1=q2=1 c separated by d=30000 m, thus the magnitude of the force is:

\displaystyle F=9\cdot 10^9\frac{1*1}{30000^2}

\displaystyle F=9\cdot 10^9\frac{1*1}{30000^2}

F = 10 N

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7 0
3 years ago
A plane has an airspeed of 142 m/s. A 30.0 m/s wind is blowing southward at the same time as the plane is flying. What must be t
const2013 [10]

Answer:

\theta=12.19^{\circ}

Explanation:

Given that

The speed of the airplane ,v= 142 m/s

The speed of the air ,u = 30 m/s

Lets take angle make by airplane from east direction towards north direction is θ .

Now by using diagram ,we can say that

sin\theta =\dfrac{u}{v}

Now by putting the values in the above equation we get

sin\theta =\dfrac{30}{142}

sin\theta=0.21

\theta=12.19^{\circ}

Therefore the angle will be 12.19° .

 

4 0
4 years ago
Which element is found in all the acids
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How many elements are in the mixture pictured?<br> A. 7<br> B. 4<br> C. 3<br> D. 2
alex41 [277]

Answer:

C: 3

Explanation:

Cause of the colors

5 0
2 years ago
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