Answer:
100,200J of heat is required to convert 0.3kg of ice of 0°C to water at same temperature.
Explanation:
Heat = mass * lf
Latent heat of fusion (lf) of water is 334J/g 
Heat = 300g * 334 J/g
Heat = 100,200J of heat 
 
        
                    
             
        
        
        
Vf^2 = Vi^2 + 2ad
a= 34 m/s^2
Vi = 0 m/s
d = 3400m
Vf = 480.83 m/s
a=v/t
t=v/a
t=480.83/34
t=14.142 s
        
             
        
        
        
Answer:
 V_{a} - V_{b} = 89.3
Explanation:
The electric potential is defined by
           = - ∫ E .ds
 = - ∫ E .ds
In this case the electric field is in the direction and the points (ds) are also in the direction and therefore the angle is zero and the scalar product is reduced to the algebraic product.
          V_{b} - V_{a} = - ∫ E ds
We substitute
          V_{b} - V_{a} = - ∫ (α + β/ y²) dy
We integrate
           V_{b} - V_{a} = - α y + β / y
We evaluate between the lower limit A  2 cm = 0.02 m and the upper limit B 3 cm = 0.03 m
            V_{b} - V_{a} = - α (0.03 - 0.02) + β (1 / 0.03 - 1 / 0.02)
             V_{b} - V_{a} = - 600 0.01 + 5 (-16.67) = -6 - 83.33
             V_{b} - V_{a} = - 89.3 V
As they ask us the reverse case
              V_{b} - V_{a} = - V_{b} - V_{a}
              V_{a} - V_{b} = 89.3
 
        
             
        
        
        
Answer:
Why are continental rises and abyssal plains relatively rare in the Pacific? This is because the extensive system of trenches along the active margins of the Pacific, trap much of the sediments flowing off the continents, preventing them from building the broad, flat abyssal plains typical of the Atlantic ocean basins.