True mechanical advantage of a machine is always greater than
        
                    
             
        
        
        
Answer: D
1200
Explanation:
Song 1 is spotted with a cube sign. 
At 3 minute, trace the spot to the vertical axis. And you will notice that it a little bit above 10.
Since it is above 10, let assume it is equal to 12.
The number of song downloaded are in hundreds. Therefore, multiply the 12 by 100
12 × 100 = 1200 downloads
Approximately, song 1 has 1200 downloads at minute 3
 
        
             
        
        
        
Protons
electrons are negatively charged
neutrons are neutral
        
                    
             
        
        
        
Answer:
An electrolytic cell converts electrical energy into chemical energy.
Explanation:
 
        
             
        
        
        
The answer is A. Heat flows from high to low. For example, when you put an ice cube in a hot drink, the heat from the drink goes to the ice cube, and that is why it melts.