Apotential difference of 123 mv exists between the inner and outer surfaces of a cell membrane. the inner surface is negative relative to the outer surface. how much work is required to eject a positive sodium ion (na+) from the interior of the cell?

Work done,

Explanation:

It is given that,

Potential difference between the inner and outer surfaces of a cell membrane,

The inner surface is negative relative to the outer surface. Let W is the work required to eject a positive sodium ion (Na+) from the interior of the cell. Work done is given by :

q is the charge on electron

So, the work required to eject a positive sodium ion (Na+) from the interior of the cell is . Hence, this is the required solution.

5 w for 1hr = 5x60x60 joules=300x60=3000x6=18,000j as total energy conversion. efficiency of bulb needed for radiant to thermal within 18000

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.