Answer:
A unit is represented in kWH or Kilowatt Hour. This is the actual electricity or energy used. If you use 1000 Watts or 1 Kilowatt of power for 1 hour then you consume 1 unit or 1 Kilowatt-Hour (kWh) of electricity.
 
        
             
        
        
        
Answer:
The bicycle slows down because of the frictional force acting on the tyres of the bicycle. When this frictional force overcomes the force applied by paddling, the bicycle stops.
 
        
                    
             
        
        
        
Answer:
The number of molecules displaced in a vibration makes the amplitude of a sound.
 
        
             
        
        
        
Answer:
Explanation:
Solution is in the picture attached