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masya89 [10]
3 years ago
8

1. What is an antigen? Give an example​

Physics
2 answers:
jasenka [17]3 years ago
5 0

A toxin or other foreign substance which induces an immune response in the body, especially the production of antibodies.
An example would be a common cold virus which causes the bodies to make antibodies which prevents the person from getting sick.
Marizza181 [45]3 years ago
4 0
A toxin or foreign substance
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What is primary sex organs called
Ostrovityanka [42]
The primary sex organs for men are called testes and ovaries for the women. They produce sex cells called gametes and they secrete sex hormones.
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4 years ago
Read 2 more answers
How much work must be done in the car to slow it from 100km/h to 50km/h
Brilliant_brown [7]

Answer:

-96.465m joule

Explanation:

Let m = mass of the car and v1 = initial velocity and v2 = final velocity

Given.

Initial velocity = 100 km/h

final velocity = 50 km/h

What is work done in the car to slow it from 100km/h to 50km/h?

v1=100km/h=27.78m/s

v2=50km/h=13.89m/s

The work done in the car to slow it from v1 to v2.

w=Δk

w=k2-k1

w= \frac{1}{2}m(v2)^{2}- \frac{1}{2}m(v1)^{2}

w=\frac{1}{2} m(v2-v1)^{2}

w=\frac{1}{2}\times m(13.89 -27.78)^{2}

w=\frac{1}{2}\times m(-13.89)^{2}

w=\frac{1}{2}\times m\times (-192.93)

w=-96.465m joule.

Therefore, the work done is -96.465m joule

7 0
3 years ago
Which statement is true?
vivado [14]

Answer:

The speed of sound in air is not affected by the temperature

Explanation:

It just isn't™

4 0
3 years ago
Can some one help me please and thanks
nataly862011 [7]

Answer:

The way in which objects exert forces on each other is described by Newton’s 3rd law of motion

Explanation:

Objects with mass exert forces on each other via the force of gravity. This force is proportional to the mass of the two interacting objects and is inversely proportional to the square of the distance between them. The factors G, M, and rare the same for all masses at the surface of the Earth.

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3 years ago
Scientist have been able to determine the composition of Earth's layers by:
Pie
D is the correct answer
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