How does a compass needle respond when a compass is placed within a magnetic field?

Answers

Answer 1

Answer:

Answer:

It point outs the magnetic poles of the magnetic field by aligning itself

Explanation:

The needle of the compass is a small magnet with a north and south magnetic poles. Now when compass is placed in a magnetic field , its needle will try to align itself in a way such that magnetic poles of the needle points the respective opposite pole of the magnetic field.

Therefore , the alignment of magnetic needle of compass shows the following -

a) North of the magnetic needle of compass - shows the south pole of the magnetic field

b) South of the magnetic needle of compass - shows the North pole of the magnetic field

Answer 2

Answer:

It aligns in a direction parallel to the field

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Why is the inner lining of the bronchiole folded?

Answers

The bronchioles or bronchioli are the passageways by which air passes through the nose or ... Theinner lining (lamina propria) of these bronchioles is thin with no glands present, and is surrounded by a layer of smooth muscle.

During inhalation, air continues to move into the lungs until:_____A) the internal pressure is the same is atmospheric pressure.
B) the internal pressure is less than atmospheric pressure.
C) the internal pressure is greater than atmospheric pressure.
D) the compliance of the lung decreases.
E) the lungs recoil.

Answers

Answer:

(B) the internal pressure is less than atmospheric pressure.

Explanation:

The process of respiration is divided into two distinct phases, inspiration (inhalation) and expiration (exhalation). During inspiration, the diaphragm contracts and pulls downward while the muscles between the ribs contract and pull upward. This increases the size of the thoracic cavity and decreases the pressure inside. As a result, air rushes in and fills the lungs.

Hence, as the thoracic cavity increases in volume the lungs are pulled from all sides to expand, causing a drop in the pressure (a partial vacuum) within the lung itself. As such the internal pressure is less than atmospheric pressure.

During expiration, diaphragm contracts inferiorly and thoracic muscles pull the chest wall outwardly (the diaphragm relaxes, and the volume of the thoracic cavity decreases, while the pressure within it increases). As a result, the lungs contract and air is forced out.

During inhalation, air continues to move into the lungs until the internal pressure is the same is atmospheric pressure. Correct option is A.

During inhalation (inspiration), the diaphragm and other respiratory muscles contract, expanding the thoracic cavity. This expansion increases the volume of the lungs, leading to a decrease in the internal pressure within the lungs. As a result, the air from the surrounding atmosphere (which has higher pressure) flows into the lungs, filling them with fresh oxygen. Inhalation continues until the internal pressure in the lungs equals the atmospheric pressure, at which point the flow of air stops, and the lungs are filled with the appropriate amount of air for that particular breath. This process is essential for proper gas exchange, where oxygen is taken into the bloodstream and carbon dioxide is expelled from the body during exhalation (expiration).

To know more about inhalation:

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What are the positive and negative of building a dam

Answers

Positive: reservoir of water for recreation, fishing, flood control, generating electricity.
Negative: habitat loss below the dam, adversely affecting all wildlife

If you cut your knee, pus, which is caused by _____, may form. medicinal material excreted by macrophages the death of macrophages pathogens trying to infect the area blood cells losing their hemoglobin

Answers

If you cut your knee, pus, which is caused by the death of macrophages may form.

Answer:

Death of macrophages

Explanation:

Pus is formed at a site of infection and consists of a protein-rich fluid which is often yellowish white in color.
This is caused because the immune cells that reach the site of infection, die and build up in the area.
These immune cells include neutrophils and macropahges.
When there is an infection, these neutrophils and macrophages reach the site of injury as they are a part of the innate immune system to control the infection and then when they die and if not cleared from the site of the infection, then a build-up of pus occurs.

Which of the following chains of amino acids corresponds to the nucleotide sequence AAUGGCUAC

Answers

Asn-Gly-Tyr is the following chain of amino acids

Dr. Wilson is analyzing the similarities between the wing of a bat and the arm of a monkey. He is using _____.

Answers

The correct answer for the question that is being presented above is this one: "comparative morphology." Dr. Wilson is analyzing the similarities between the wing of a bat and the arm of a monkey. He is using comparative morphology. Comparative morphology refers to the analysis of the patterns of the locus of structures within the body plan of an organism, and forms the basis of taxonomical categorization.

B) comparative morphology is correct

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