Answer:
a. each particle of matter vibrates about its normal rest position and along the axis of propagation,
b. Liquids
C. because liquids have the right amount of space between them for the wave to pass through quickly
Explanation:
Answer:
A.) The welfare of a human community
Explanation:
The answers B, C, and D revolve around the environment rather than being focused on humans. <em>Anthroprocentric </em>is the thought process that humans are the central or most important element of existence. Answer A does this best as it revolves around the <u>human </u>community.
I believe it is true because if speaker is too complex he/she would tend to lose the audience. Hope this is correct :)
Answer:
It reduces strength.
Explanation:
It not desirable to produce concrete mixtures of a higher consistency than normal because the strength of the concrete decreases. Consistency plays an important role in the determination of strength of concrete. Less water than normal quantity in concrete increases the consistency but decreases strength due to incomplete chemical reaction while on the other hand, adding more water would increase water-cement ratio and reduces consistency as well as strength of the concrete so that's why necessary amount of water and cement should be added to get higher strength.
