In a cup of water it is a positive and negative charge of zero
        
             
        
        
        
140 Jules. Is the correct answer
        
                    
             
        
        
        
Answer:
The speed decreases.
Explanation:
This can be explained using the conservation of linear momentum.
Since there is no friction, the initial moment of the train must be equal to its linear moment after it is filled with water.
the initial linear momentum is

where  is the initial mass of the train, and
 is the initial mass of the train, and  the initial speed of the train.
 the initial speed of the train.
And linear momentum after the water filled the train car is

where  is mass of the train after the  rain, and
 is mass of the train after the  rain, and  the speed of the train after the rain
 the speed of the train after the rain
<u>the equality must be fulfilled:</u>

We know that if water is added to the train,  that is the mass after the water is added, is greater than
 that is the mass after the water is added, is greater than  which is the mass of the train without the water.
 which is the mass of the train without the water.
Therefore, in order for the conservation of the linear momentum to be fulfilled: 
the speed after the water is added ( ) must be smaller than the initial train speed (
 ) must be smaller than the initial train speed ( ) . So the speed of the car decreases.
 ) . So the speed of the car decreases.
 
        
             
        
        
        
Incandescent lights get hot very quickly and therefore can easily burn u or catch fire
        
                    
             
        
        
        
Answer:
cycles, graphing, precise measurementation
Explanation: