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The transmission of a nerve impulse along a neuron from one end to the other occurs as a result of electrical changes across the membrane of the neuron. The membrane of an unstimulated neuron is polarized—that is, there is a difference in electrical charge between the outside and inside of the membrane.
and
The nervous system can respond quickly to stimuli, through the use of action potentials and neurotransmitters. Responses to nervous system stimulation are typically quick but short lived. The endocrine system responds to stimulation by secreting hormones into the circulatory system that travel to the target tissue.
Explanation:
As the given data is as follows.
m = 6.51 kg, g = 9.8
, h = 66.8 m
mass of water (M) = 0.68 kg, Specific heat of water = 4200 

According to the given situation, the decrease in potential energy of mass will be equal to heat energy gained by water.
Therefore,
mgh = 

4261.7064 = 
1.492 =
- 15
So, 
= 
Therefore, we can conclude that rise in temperature will be
.
1) 333.6 C
In order to have breakdown, the electric field at the surface of the cloud must be equal to the breakdown electric field:

The electric field strength at the surface of a charged sphere is given by

where
is the vacuum permittivity
Q is the charge on the sphere
R is the radius of the sphere
Here we have a cloud of radius

So we can re-arrange the previous equation in order to find the charge on the cloud:

2)
excess electrons
The total charge of the cloud must be (in magnitude)
Q = 333.3 C
We know that one electron carries a charge of

The total charge is just given by the charge of each electron multiplied by the number of excess electrons in the cloud:

where
N is the number of excess electrons
Solving for N, we find:

Show the graph. I need to see the graph first in order to get the awnser