S velocity ratio of a machine affected by applying oil on it? Explain with reason. 1
Show the relationshi
2
What are the factors that affect the efficiency of a pulley?

s the environmental science is a broader field that incorporates many elements of earth and life sciences, whereas ecology is usually more focused on how organisms interact with each other and their surroundings, and often on a very specific population of living things. soo yea

explanation:

one "light year" is the distance that light travels, through vacuum, in one julian year.   that's 365.25 days, of 24 hours each.