Assume an axon has an internal diameter of 1μm and a myelin sheath 1μm thick. the internal specific resistance is 100 ω cm. for the myelin sheath use a dielectric constant of 8 and a transmembrane resistance of 2 x 105 ω cm2 . calculate the internal resistance per unit length

Explanation:

The question says that, "After how long does a mobile acquire a speed of 30 m / s, if it starts from rest and its acceleration is 3 m / s*2"

Initial speed is 0

Final speed is 30 m/s

Acceleration a = 3 m/s²

It is required to find time when it acquire a speed of 30 m/s. Using equation of kinematics as :

So, after 10 seconds it will acquire a speed of 30 m/s.