Answer:
1) ironing a shirt 2) writing on surfaces 3) working of an eraser 
 
        
             
        
        
        
Answer:
It must be high do to the gravity
Explanation:
 
        
             
        
        
        
Answer:
A. External
Explanation:
External stimulus includes touch/pain, vision, smell, taste, and sound.
 
        
             
        
        
        
Answer:
The cooling time will not be reduced.
Explanation:
The time to cook is virtually the same in both types, vigorously and gently boiling water. 
The reason cooking of spaghetti  calls for vigorously boiling water is to keep the pasta agitated so that they do not stick to one another.
The temperature of boiling water is the same for both vigorously boiling water and gently boiling water, therefore there will be little time difference in when the potatoes will cook when it is done with vigorously boiling water than when it is cooked with gently boiling water.
However cooking potatoes in vigorously boiling water may cause the water to dry up on time and the potatoes get burnt.
 
        
             
        
        
        
c.charge due to the reaction process between the two