Gamma rays are waves of energy that have no charge. TRUE.
        
                    
             
        
        
        
 Smart Metering is a technology encouraging end-use energy efficiency. Smart Meters can give consumers clear and comprehensive information about their energy consumption and, giving them better information, can help consumers to become more energy efficient.
Hope it helped you... pls mark brainliest
 
        
             
        
        
        
A diverging lens is used to permit clear vision of an object placed at infinity. The focal length of the lens is -100 cm.
<h3>What is focal length?</h3>
The focal length is half of the radius of curvature of the focal lens.
By the lens maker formula,
1/f = 1/v +1/u
where, v is the image distance and u is the object distance.
Give, the object is at infinity and the image must form at 100 cm, the the focal length will be
1/f = 1/ -100 + 1/∞ 
f = -100 cm
The focal length must be -100 cm for the diverging lens.
Learn more about focal length.
brainly.com/question/16188698
#SPJ1
 
        
             
        
        
        
Force 
Explanation:
so force is your answer see why b/c
 
        
             
        
        
        
Answer:
elastic collision
An elastic collision occurs when the two objects "bounce" apart when they collide. Two rubber balls are a good example. In an elastic collision, both momentum and kinetic energy are conserved. Almost no energy is lost to sound, heat, or deformation.
I hope it's helpful!