Answer : The specific heat capacity of the alloy 
Explanation :
In this problem we assumed that heat given by the hot body is equal to the heat taken by the cold body.


where,
 = specific heat of alloy = ?
 = specific heat of alloy = ?
 = specific heat of water =
 = specific heat of water = 
 = mass of alloy = 21.6 g
 = mass of alloy = 21.6 g
 = mass of water = 50.0 g
 = mass of water = 50.0 g
 = final temperature of system =
 = final temperature of system = 
 = initial temperature of alloy =
 = initial temperature of alloy = 
 = initial temperature of water =
 = initial temperature of water = 
Now put all the given values in the above formula, we get


Therefore, the specific heat capacity of the alloy 
 
        
             
        
        
        
Answer:
B)The motion of water in an ocean current
Explanation:
With respect to measurements, a vector has both a magnitude and a direction. The first three examples (maximum height of a hill, air temperature, and rain accumulation) are magnitudes only. The fourth example (motion of water in an ocean current) is a vector, because it has a magnitude (speed) and a direction (with the current). 
 
        
             
        
        
        
Answer:
Spiral 
i know it is so dont say nun people 
Explanation:
 
        
                    
             
        
        
        
The moon is made up mostly of Silicates, hope this answer helps.