The vanishing of an ionic solid (like table salt) would be an example of acting like a solvent
        
                    
             
        
        
        
Answer:
a. If an object's speed is constant, then its acceleration must be zero.
FALSE
As we know that acceleration is defined as the rate of change in velocity

so we can not say anything about the acceleration when speed is given to as and no information is given about velocity
b. If an object's acceleration is zero, then its speed must be constant.
TRUE
As we know that acceleration is defined as the rate of change in velocity

Since we know that if acceleration is 0 then velocity must be constant and hence speed is also constant
c. If an object's velocity is constant, then its speed must be constant.
TRUE
Since velocity is constant then it shows that its magnitude and direction both are constant so its speed is also constant.
d. If an object's acceleration is zero, its velocity must be constant.
TRUE
As we know that acceleration is defined as the rate of change in velocity

Since we know that if acceleration is 0 then velocity must be constant
e. If an object's speed is constant, then its velocity must be constant.
FALSE
Speed is just the magnitude so we can not say about its direction and hence if speed is constant then velocity may or may not change
 
        
             
        
        
        
Anything less dense than water will float, like oil. Anything more dense than water will sink, like rock.
        
             
        
        
        
 Answer:
The time it can operate between chargins in minutes is 

Explanation:
Given:  ,
,  ,
, 
a). The rotational kinetic energy 






b). The power average 0.8kW un range time can be find 

Solve to t'



 
        
             
        
        
        
A. is a neutral substance a pH of 7 describes something of neutral pH where anything less than 7 is an acid and higher is a base