Answer:
a) 
b) 
c)
,
Explanation:
From the question we are told that:
Mass 
Velocity 
Coefficient of Rolling Friction 
a)
Generally the equation for The Propulsion Force is mathematically given by



b)
Therefore Power Required at




c)



Generally the equation for Work-done is mathematically given by



Therefore
Efficiency

Since
Energy in one gallon of gas is

Therefore


I think it’s b amplitude and wavelength
Answer:
Explanation:
in series, resistors just add up
27+33+51+1200+240= 1551 ohms
Energy, because matter is an object with mass. hope this helped :)