Ametallic laboratory spring is typically 5.00 cm long and 0.150 cm in diameter and has 50 coils.
part a
if you connect such a spring in an electric circuit, how much self-inductance must you include for it if you model it as an ideal solenoid?
express your answer to three significant figures and include the appropriate units.

An electron is ejected into a horizontal uniform e⃗ field at a parallel horizontal velocity of v0. assume the electron's initial position x0, initial velocity v0, time t, magnitude of electric field e, electron's mass m, and the magnitude of the electron's charge |e|. ignore the force that earth exerts on the electron. assume the e⃗ field is in the same direction as the initial velocity. part a define the equation for the electron's velocity. express your answer in terms of the variables v0, |e|, t, e, and m.