On the Moon they would weigh only 200 N. The astronaut's mass is 120kg wherever they are. The weight of an object changes if the strength of gravity changes. Remember: a mass of 1 kg has a weight of about 10 N on Earth.
The droplets in the air may be breathed in by those nearby. Spread can also occur by touching the nose or mouth with droplet contaminated hands. Examples of droplet spread diseases: 1  common cold. 2  flu. 3  meningococcal disease. 4  rubella.
M. tuberculosis. is carried in airborne particles, called droplet nuclei, of 1â 5 microns in diameter. Infectious droplet nuclei are generated when persons who have pulmonary or laryngeal TB disease. cough, sneeze, shout, or sing. Depending on the environment, these tiny particles can remain. suspended in the air for several hours.