Answer:

Explanation:
The weight of an object on Earth is given by  , so we can calculate its mass by doing
, so we can calculate its mass by doing  , which for our values is:
, which for our values is:

<em>Nothing is being asked</em> about Io but if one wanted to know the weight <em>W'</em> of the watermelon there one just have to do:

 
        
             
        
        
        
The answer is gravity. I hope this helps. 
        
                    
             
        
        
        
Answer:
speed = wavelength * frequency
Explanation:
Thenks and mark me brainliest :)
 
        
             
        
        
        
Given :
Liquid is poured into a burrete so that it reads 14cm³.
50 drops were run each of volume 0.1cm³ .
To Find :
The volume of liquid in burrete after 50 drops.
Solution :
Volume of each drop, v = 0.1 cm³.
Initial volume in burrete, V = 14 cm³.
Now, volume left after droping 50 drops are :

Therefore, the volume left in burrete is 9 cm³ .
 
        
             
        
        
        
D. all of the above
Hope this helps!