Answer:
Speed of sound wave v=νλ=2000×0.35=700 m/s
Distance d=1.5 km=1500 m
Time t=vd=7001500≈2 s
Answer:
How economic, social and political factors affect the quality of life of children
Explanation:
The correct answer to this open question is the following.
The perspective, or paradigm, that I think is the most interesting way to view and observe social interactions is the following.
I consider that the most interesting perspective is the functionalist perspective. This perspective sees every aspect of society as an independent component that when joined together with the other components, makes society function as a whole. All the elements of society play an important role or exert a key function that can be related to other functions.
Some sociologists have established the concept of the social contract to show that these social components should be in balance in order for society to work well.
Members of society share norms, customs, perceptions, and ideas and intermingle respecting and being tolerant with all of these ideas.
Sinoatrial node part of the autonomic nervous system adjusts the heart rate and the arteriole diameter to regulate blood pressure through negative feedback
The SA (sinoatrial) node is generates an electrical signal that can causes the upper heart of the chambers (atria) to contract. The signal and then passes through the AV (atrioventricular) node to the lower of the heart chambers (ventricles), causing them to contract, or to pump. The SA node is considered the pacemaker of heart.
The sinus node continuously generates electrical impulses, thereby setting the normal rhythm and also rate in a healthy heart. Hence, the SA node is also referred to as the natural pacemaker of the heart
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