How can you make a car more energy efficient?

Select one:
a. idle excessively
b. burn more fuel
c. paint the car
d. tune the engine

Air is contained in a variable-load piston-cylinder device equipped with a paddle wheel. initially, air is at 400 kpa and 17°c. the paddle wheel is now turned by an external electric motor until 75 kj/kg of work has been transferred to air. during this process, heat is transferred to maintain a constant air temperature while allowing the gas volume to triple. calculate the required amount of heat transfer in kj/kg.

The law of the conservation of momentum says that the total momentum of any closed and isolated system cannot

In a series circuit the __ is the same at every point