Answer:
Explanation:
Given
Charge Q is uniformly spread over large non-conducting Elastic sheet      
Electric field due to non-conducting Elastic sheet

where  surface charge density
surface charge density

for side 2d Electric Field is given by



 
        
             
        
        
        
Answer: Approximately 8.0g of water
Explanation:
 
        
             
        
        
        
This effect is explained by increased chain entanglements at higher molecular weights. Increasing the degree of crystallinity of a semicrystalline polymer leads to an enhancement of the tensile strength. Deformation by drawing increases the tensile strength of a semicrystalline polymer.
        
             
        
        
        
Answer: 81.619 kJ
Explanation:
Given
Mass of roller coaster is 
It reaches the steepest hill with speed of 
Hill to bottom is 51 m long with inclination of 
Height of the hill is 
Conserving energy to get kinetic energy at bottom
Energy at top=Energy at bottom
