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4 years ago

What is one type of white blood cell that participates in the specific immune response called?

Physics

2 answers:

Simora [160]4 years ago

7 0

It is called C. Macrophages.

kramer4 years ago

6 0

Answer:

Explanation:

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Why are chemical changes considered "unseen"?

Lilit [14]

Chemical changes are considered "unseen" because they change the chemical makeup, instead of the overall appearance.

6 0

3 years ago

Define average velocity and instantaneous velocity when are they same

Vlada [557]

Answer:

Look to the explanation

Explanation:

Average velocity: is the average rate of change of displacement with

respect to time

Average velocity is a measure for distance traveled in a given time

We can calculate the average velocity by the rule $v=\frac{s}{t}$

where s is the displacement and t is the time

Instantaneous velocity: is the velocity of an object in motion at a

specific point (x , t)

instantaneous velocity is the limit of velocity as the change in time

approaches zero

We can calculate the instantaneous velocity by the rule $v=\frac{ds}{dt}$

Average velocity is equal to the instantaneous velocity when

acceleration is zero

5 0

3 years ago

What happens to the speed of a sound wave as it passes from the air into the ground?

meriva

Answer:

SEE BELOW

Explanation:

Sound travels faster in warmer air, so the sound waves are refracted upward, away from the ground. Various atmospheric conditions can cause a temperature inversion, with air temperature increasing with height. This causes some of the sound energy from a source near the ground to be refracted back toward the ground.

5 0

3 years ago

500 angstrom = ... km

erastovalidia [21]

1 angstrom = 10^-13 km
500 angstrom = 500 x 10^-13 km = 5 x 10^-11

6 0

4 years ago

Need help in the question that is down

goblinko [34]

Answer:

4th ans

Explanation:

8 0

3 years ago