<span> the angle of reflection is
30 degrees</span>
Answer:

Explanation:
The angular speed is defined as the angle traveled in one revolution over the time taken to travel it, that is, the period. Therefore, it is given by:

The angular frequency of the simple harmonic motion of the mass-spring system is defined as follows:

Here, k is the spring's constant and m is the mass of the body attached to the spring. Solving for k:

Answer:

Explanation:
<h3><em>

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Answer:
Explanation:
Ecological succession is a process of inhabiting a zoological area by a group of organisms. it involves many stages to reach the climax stage such as primary, secondary, tertiary names basing on the habitat where it occurs. once the organisms reach the most stable stage of the succession. thus it maintains equilibrium Succession helps restore the equilibrium of an ecosystem by forming up new species, diversifying species, and basically by replacing the damaged, deranged, or disturbed community. For instance, when a sudden climate change occurred in a community, such as drought, dryness, fire, or heat waves, all living things that depends on water or survives in a cool, wet environment will die or migrate somewhere else. Thus, leaving that community vacant and/or unoccupied by any living things. Succession, then, will take place in that area by going through various stages until reaching the climax stage, in which the ecosystem is complete again.
Considering that the silica is a solvent, the lead is called the colloid, which is a substance that added to another substance in the matter in which you described.