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The acceleration due to gravity on the Moon is only about 1/6 of that on Earth. An astronaut whose weight on Earth is 600 N travels to the lunar surface. His mass as measured on the Moon is
Respiratory Distress Syndrome
A serious condition where the lungs cannot provide enough oxygen to the body's vital organs, often seen in premature infants.
RSV
Respiratory Syncytial Virus is a common respiratory virus that usually causes mild, cold-like symptoms but can be serious in infants and older adults.
COPD
Chronic Obstructive Pulmonary Disease, a group of lung conditions that cause breathing difficulties.
ERV
Expired Reserve Volume; the additional amount of air that can be forcibly exhaled after the completion of a normal, quiet expiration.
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