D I think this is the right answer but I am not completely sure
Answer:
The charge stored is 
The energy stored is
Explanation:
From the question we are told that
The area of the plates is
The separation between the plate is 
The potential difference is 
The permitivity of free space is 
The dielectric constant of glass is K = 5.0
Generally the capacitance of this capacitor is

substituting values


The charge stored is mathematically evaluated as

substituting values


The energy stored is

substituting values


Acceleration = force/mass
1/4
s=ut+1/2at^2
0*4+1/2*1/4*4^2
1/2*1/4*16
1/2*4
=2
Answer:
Explanation:
a )
Pressure on the bottom
= hdg
= 2.5 x 820 x 9.8
= 20090 N / m²
b )
force = area x pressure
= 20090 x 10 x 6 N
= 1205400 N
c )
Force on 10m x 2.5 m face
center of gravity of the tank will lie at height 2 .5 / 2 = 1.25 m
Pressure = hdg
= 1.25 x 820 x 9.8
= 10045 N/m²
force = pressure x area
= 10045 x 10 x 2.5
= 251125 N .
The incorrect answer is C