837_Physics ProblemsTechnical Physics

837_Physics ProblemsTechnical Physics - Chapter 29 P29.53...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 29 177 P29.53 (a) Define vector h to have the downward direction of the current, and vector L to be along the pipe into the page as shown. The electric current experiences a magnetic force . I hB × af in the direction of L . (b) The sodium, consisting of ions and electrons, flows along the pipe transporting no net charge. But inside the section of length L, electrons drift upward to constitute downward electric current JJ ×= area Lw . The current then feels a magnetic force IJ L w h B ° sin90 . FIG. P29.53 This force along the pipe axis will make the fluid move, exerting pressure FJ L w h B hw JLB area == . P29.54 F y = 0: +− = nm g 0 F x = −+ ° = µ k nI B sin . 90 0 0 B mg Id k = 0 100 0 200 9 80 10 0 0 500 39 2 .. . . kg m s A m mT 2 bg ej a fa f P29.55 The magnetic force on each proton, Fv B B qq v B =×= ° sin90 downward perpendicular to velocity, causes centripetal acceleration, guiding it into a
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/14/2011 for the course PHY 203 taught by Professor Staff during the Fall '11 term at Indiana State University .

Ask a homework question - tutors are online