Ametallic laboratory spring is typically 5.50cm long and 0.140 cm in diameter and has 50.0 coils. 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?

In a load, the load is paralel to the shaft. n a. angular n b. thrust n c radial n d. none of the above

The speed of light in a material is 0.50 c. what is the critical angle of a light ray at the interface between the material and a vacuum?

Aparticle moves in the xy plane with constant acceleration. at time zero, the particle is at x = 6 m, y = 8.5 m, and has velocity ~vo = (9 m/s) ˆı + (−2.5 m/s) ˆ . the acceleration is given by ~a = (4.5 m/s 2 ) ˆı + (3 m/s 2 ) ˆ . what is the x component of velocity after 3.5 s? answer in units of m/s.