Answer:
The object accelerates downward at 4 m/s² since the tension on the rope is less than weight of the object. 
Explanation:
Given;
mass of the object, m = 2 kg
weigh of the object, W = 20 N
tension on the rope, T = 12 N
The acceleration of the object is calculated by applying Newton's second law of motion as follows;
T = F + W
T = ma + W
ma = T - W
 (the negative sign indicates deceleration of the object)
 (the negative sign indicates deceleration of the object)
The object accelerates downward at 4 m/s² since the tension on the rope is less than weight of the object.
 
        
             
        
        
        
<span>A. Comparison 
</span>What type of organization is used in a paragraph that lists similarities between two objects? Comparison
NOT:
<span>B. Contrast 
C. Chronological order 
D. Cause and effect</span><span>
</span>
        
             
        
        
        
Answer:
I HOPE THIS IS CORRECT 
Explanation:
Power of water =2 kw=2000w
Mass of water =200kg
difference in temperature ΔT=70−10=60oC
Concept
energy required to heat the water = energy given by water in time t=pt
energy required to increase tempeature of water by 60oC,Q=msΔT
S= specific heat =4200J/kgoC
              pt=msΔT
   2000×t=200×4200×60
      t=25200  
or   t=25.2×103sec.
 
        
             
        
        
        
It is based on atomic number, which is the number of protons in the nuclei of the atoms of an element.