Answer:
λ = 28,14 m
Explanation:
To find the wavelength of the wave you use the following formula:
 (1)
  (1)
v: speed of the wave = 1,97 m/s
λ: wavelength 
f: frequency of the wave = 0,07 Hz
You replace the values of v and f in the equation (1) and solve for λ:

hence, the wavelength of the wave is 28,14 m
 
        
             
        
        
        
Answer:
steel
Explanation:
steel because steel has more power to hold something up, where bricks arent as stable
 
        
                    
             
        
        
        
♥ C) 94%
♥ If the work put into a lever is 930 joules and the work accomplished is 870 joules, the efficiency of the lever is 94%.
♥ <span>870/930=93.5
</span>♥ And rounded you get 94.
        
                    
             
        
        
        
Answer:
0.006<357<700.003<6010<9256.0<9520.00