Answer:it is a
Explanation hope this helps .
Force can alter its direction,slow or stop it you could say it can change its velocity
The answer to that would be that
they require so its mandatory for mechanical waves to travel through a medium
Answer:
(a) 3.24 w (b) 44.44 ohm
Explanation:
It is given that car draws 0.27 A current so current I = 0.27 A
The system has a voltage of 12 V
(a) Electrical power = voltage ×current 
(b) The resistance is defined as the ratio of voltage and current
So resistance 