This type of wave is a transverse wave. Transverse waves are always characterized by particle motion being perpendicular to wave motion. A longitudinal wave is a wave in which particles of the medium move in a direction parallel to the direction that the wave moves.
Answer: It is our need for company that urges us to make friends. So we make friends for companionship.
<u>Explanation:</u>
The kind of reward that we want from friendship is companionship.
- We make friends for a company. It is our need for a company that urges us to make friends.
- We enjoy when we have a friend. Life becomes relaxed.
- Our friend is our companion so we can easily share our problems with him or her.
The positive way that we can get this reward of companionship is
- Man is a social animal. He needs a company to live, otherwise, he cannot survive. So companionship satisfies our social needs.
- Human beings are emotional too. They need to share their feelings. So they can share it with their companion. We are emotionally satisfied.
Given:
= 323 K
= 293 K
specific heat of aluminium,
specific heat of water,
Formula Used:
Q = m
Solution:
Let the temperature at equilibrium be ' ' K
Now at equilibrium, using the given formula:
Temperature at equilibrium, = 295.513 K
Now, change in entropy(in J/K) is given by:
Q = m
= 12094.28 cal
Now,
= 40.93 cal/K = 9.78 J/K
Therefore change in entropy is given by:
Density is mass divided by volume p=m/v
Answer:
C. Access to the Aegean Sea was important for trade and transportation.
Explanation:
"Macedonia" <em>(ancient) </em>was a small kingdom located in the north of Greece. Its region is located near communication routes, such as the <u>Danube River</u> and the<u> Aegean Sea.</u>
In the past, it had access to the Aegean Sea which facilitated trade and transportation between people coming from different areas. This is also the reason why many of the ports are currently located along the Greek coasts of the Aegean Sea.
The Greek region of Macedonia is called <em>"Aegean Macedonia."</em>
So, this explains the answer.