The contact force is indeed caused by "Contact".
Air resistance is basically a type of friction, which is apparently present providing two object contact.
The rest selections are all interaction force, which is not necessarily caused by contact.
The answer is deflation...have a good day
Answer:
77647
Explanation:
= Efficiency = 34%
Power used in 1 home = 0.02 MW
Total power is

Waste of power

Number of homes would be given by

The number of homes that could be heated with the waste heat of this one power plant is 77647
Answer:
a force that is able to act at a distance
Explanation:
:)