¿El salario es un costo fijo o variable?
Los salarios anuales son costos fijos, pero otros tipos de compensación, como comisiones o horas extraordinarias, son costos variables.
        
             
        
        
        
Answer:
B it decreases
Explanation:
the movement of a positive test charge in the direction of an electric field would be like a mass falling downward within Earth's gravitational field. Both movements would be like going with nature and would occur without the need of work by an external force. This motion would result in the loss of potential energy
 
        
             
        
        
        
Answer: Sí, toda la energía cinética se puede perder si las dos masas se detienen debido a la colisión.
Explanation:
 
        
             
        
        
        
Answer:
Please check the attached file for the diagram
Explanation: 
The velocity of the of the rowboat  through the river is the resultant velocity. It is obtained taking a vector sum of the velocity in still water and the velocity of the river.
  through the river is the resultant velocity. It is obtained taking a vector sum of the velocity in still water and the velocity of the river.
There are several ways to take this vector sum, but the question makes it simple for us to use Pythagoras's theorem because the East and North directions are perpendicular to each other.
Hence;

