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.
From Wikipedia, the free encyclopedia. A blood-borne disease (sometimes referred to as a blood-borne virus or BBV) is one that can be spread through contamination by blood and other body fluids. The most common examples are HIV, hepatitis B, hepatitis C, and viral hemorrhagic fevers.Diseases that are not usually transmitted directly by blood contact, but rather by insect or other vector, are more usefully classified as vector-borne disease, even though the causative agent can be found in blood.he most common examples are HIV, hepatitis B, hepatitis C, and viral hemorrhagic fevers. Diseases that are not usually transmitted directly by blood contact, but rather by insect or other vector, are more usefully classified as vector-borne disease, even though the causative agent can be found in blood.