Answer:
Following are the solution to the given question:
Explanation:
For charging plates that are connected in a similar manner:
Calculating the total charge:

Calculating the common potential:
Calculating the charge after redistribution:
What are you trying to find?
Answer:
2.89 x 10^6 N
Explanation:
The explanation is shown in the picture attached
Answer: D. Water.
Explanation: Among liquids, water has highest heat capacity (4.18 kJ/Kg.K) but hydrogen has highest (14.3 kJ/Kg.K) heat capacity of all.
Answer:
Explanation:
Given
coefficient of kinetic friction
=0.34
inclination 
weight of block=51 N
(a) When block is moving upward friction force acts downward
thus

as block is moving with constant velocity thus
is zero



(b)When Block slides down the wall friction changes its direction to oppose the block



