Answer:
A) Cost
Explanation:
Chain drives have low maintenance cost.
Answer:
the answer is attached with required units.
Explanation:
I can help you, but what are the options that were given to you?
Answer:
An air mass is a body of air with horizontally uniform temperature, humidity, and pressure.
Explanation:
Because it is
Answer:

Explanation:
g = Acceleration due to gravity at sea level = 
R = Radius of Earth = 6371000 m
h = Altitude of observatory = 4205 m
Change in acceleration due to gravity due to change in altitude is given by

Weight at sea level

Weight at the given height

Change in weight 
Her weight reduces by
.