When a nerve cell fires, a charge is transferred across the cell membrane to change the cell's potential from negative to positive. For a typical nerve cell, 9.0 pC of charge flows in a time of 0.47 ms.
What is the average current through the cell membrane?

Explanation:

The given data is as follows.

      q = 9.0 pC =    (as 1 pC = )

      t = 0.47 ms =  (as 1 ms = )

As we know that relation between charge and current is as follows.

             I =

Putting the given values into the above formula as follows.

             I =

               =

               =

or,           = 19.14 nA

Thus, we can conclude that the average current through the cell membrane is 19.14 nA.

in this image, you can see solar radiation going through ocean water.

no image, but probably absorption

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.