Answer:
i) Q' = Q/2.
ii) If the wires to the battery are disconnected, the amount of charge on the plates remains constant, and the voltage across the plates remains the same.
Explanation:
i) The formula for capacitance is given as
C = A/d
Where d = separation between the plates
The formula for the charge stored is given as
Q = CV
Q = AV/d
When "d" is doubled, the charge stored "Q" becomes half because Q is inversely proportional to the separation between the plates, d.
Thus, Q' = Q/2.
ii) If the wires to the battery are disconnected, the amount of charge on the plates remains constant, and the voltage across the plates remains the same.
Answer:
the answer is A all the other ones do not even make sence or fit the situation. so A
Explanation:
Well, basically because the observations can help you out during the experiment.
Answer with Explanation:
We are given that
Force acts on a pebble=
N
Position vector=
m
a.We have to find the resulting torque on the pebble about origin.
Torque=
Substitute the values then we get

Torque=
N-m
By using 
b.

Torque about point (2,0,-3)

N-m
Archimedes is known for contributions to a scientific discipline that is different from that of the other scientists.