Answer:
I already told ya
Explanation:
i got brainly so i could learn
 
        
             
        
        
        
A mechanical wave must have a medium.
Hope this helps,
♥<em>A.W.E.<u>S.W.A.N.</u></em>♥
        
                    
             
        
        
        
Answer:
a) 75.5 degree relative to the North in north-west direction
b) 309.84 km/h
Explanation:
a)If the pilot wants to fly due west while there's wind of 80km/h due south. The north-component of the airplane velocity relative to the air must be equal to the wind speed to the south, 80km/h in order to counter balance it
So the pilot should head to the West-North direction at an angle of

 relative to the North-bound.
 relative to the North-bound.
b) As the North component of the airplane velocity cancel out the wind south-bound speed. The speed of the plane over the ground would be the West component of the airplane velocity, which is
