By how much should the pressure of a litre of water be changed to compress it by 0.10% ?
1 answer:
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Answer:
(a) Ey is negative
(b) The magnitude of the electric field is E = 171.429 V/m
(c) The potential difference between points B and C is 17.1429 V
Explanation:
(a) Here, we have the potentials given by;
with point A at y = 8.00 cm and point B at point y = 15.0 cm
where point B is at a higher potential than point A, that is the electric potential is from;
B with y = 15.0 cm to A with y = 8.0 cm which means
decreases as y increases or
is negative.
(b) The magnitude of the electric field is given by
The work done to move a charge from B to A is
where
∴
E = 171.429 V/m
(c) Here we have point C x = 5.00 cm and y = 5.00 cm
Therefore we have the distance from B to C given by
Where 10.00 cm = 0.01 m
E = V/Δy
Therefore, V = Δy·E
For , Δy =
and we have,