Answer:
η = 58.8%
Explanation:
Work is defined as the force applied by the distance traveled by the body.

where:
W = work [J] (units of joules)
F = force = 294 [N]
d = distance = 5 [m]
![W = 294*5\\W = 1470 [J]\\](https://tex.z-dn.net/?f=W%20%3D%20294%2A5%5C%5CW%20%3D%201470%20%5BJ%5D%5C%5C)
Efficiency is defined as the energy required to perform an activity in relation to the energy actually added to perform some activity. This can be better understood by means of the following equation.

 
        
             
        
        
        
1.4 N is a weight so calculating it's mass 
1.4/9.8 = 0.1428 kg 
momentum will be 0.1428*44.7 = 6.38 kgm/s
        
                    
             
        
        
        
Answer:
Option (C) is the answer
Explanation:
may be it is possible if that we stand so far
 
        
             
        
        
        
Answer:
5 metre. 
Explanation:
Wavelength = Velocity / Frequency
= 23,000/ 4,500
= 5 metre.
 
        
             
        
        
        
the one with the big mustard-colored stripe across it is the correct choice.