Answer: D. 
Explanation:
The energy  of an electromagmetic wave is given by:
 of an electromagmetic wave is given by:
 
 
Where:
 is the Planck constant
 is the Planck constant
 is the speed of light in vacuum
 is the speed of light in vacuum
Then 
 is the wavelength
 is the wavelength
Solving:
 
 
 
 
 
        
             
        
        
        
Answer:
21.75 m
Explanation:
t = Time taken for the car to slow down = 0.75 s
u = Initial velocity = 50 m/s
v = Final velocity = 8 m/s
s = Displacement
a = Acceleration
Equation of motion

Acceleration is -56 m/s²

The distance covered in the 0.75 seconds is 21.75 m
 
        
             
        
        
        
True. There are forced acting on it, but as they're balanced it is unmoving
        
                    
             
        
        
        
Answer:
Save the file and try to put stuff over the file. (kinda off like a picture)