Answer:
A) Cost
Explanation:
Chain drives have low maintenance cost.
Answer:

Explanation:
From the question we are told that:
Water flow Rate 
Initial Temperature 
Final Temperature 
Let
Specific heat of water 
And


Generally the equation for Heat transfer rate of water
is mathematically given by
Heat transfer rate to water= mass flow rate* specific heat* change in temperature



Therefore


Answer:
Changing oil.
Explanation:
You need to regularly check and change your car’s oil to ensure smooth running of the vehicle and to prolong the lifespan of its engine.
Answer:
A.) 0.3088
B.) 0.0017
C.) part A
Explanation:
A.)




B.)


C.) Since the seat performance for an individual pilot is more important than 39 different pilots.