# Time Asymmetry Re-Visited

Jun 17th, 2015
Studypool Tutor
Price: \$10 USD

Tutor description

Abstract: Time does not feature in the equations describing the world of elementary particles and in some border astrophysical conditions. There, there is time symmetry. The world of the macro, on the other hand, is time asymmetric.

Word Count: 4574
Showing Page: 1/16
PAPER -20031.A particle of mass M and charge Q moving with velocity v describes a circular path of radiusR when subjected to a uniform transverse magnetic field of induction B. The work done bythe field when the particle completes one full circle is Mv 2 (A) (B) zero 2R R (C) BQ2R(D) BQv2R1.B.Since the particle completes one full circle, therefore displacement of particle = 0Work done = force displacement = 02.A particle of charge 16 1018 coulomb moving with velocity 10 ms1 along the x-axisenters a region where a magnetic field of induction B is along the y axis, and an electricfield of induction B is along the y-axis, and an electric field of magnitude 104 V/m is along thenegative z-axis. If the charged particle continues moving along the x-axis, the magnitude ofB is(A) 103 Wb/m2(B) 105 Wb/m2162(C) 10 Wb/m(D) 103 Wb/m22.A.(1)F q(E v B)The solution of this problem can be obtained by resolving the motion along the threecoordinate axes namelyFqax x (Ex v yBz v zBy )m mFy qay (E y v zB x v xBz )m mFqaz z (Ez v xBy v yBz )m mFor the given problem,Ex Ey 0, v y v z 0 and B x B z 0Substituting in equation (2), we geta x a z 0 and ay Ey v xBzIf the particle passes through the region undeflected ay is also zero, thenE y v xB z Bz Eyvz10 4 103 Wb / m210

## Review from student

Studypool Student
" Excellent work as usual "

1821 tutors are online

### Other Documents

06/17/2015
06/17/2015
06/17/2015
06/17/2015

Brown University

1271 Tutors

California Institute of Technology

2131 Tutors

Carnegie Mellon University

982 Tutors

Columbia University

1256 Tutors

Dartmouth University

2113 Tutors

Emory University

2279 Tutors

Harvard University

599 Tutors

Massachusetts Institute of Technology

2319 Tutors

New York University

1645 Tutors

Notre Dam University

1911 Tutors

Oklahoma University

2122 Tutors

Pennsylvania State University

932 Tutors

Princeton University

1211 Tutors

Stanford University

983 Tutors

University of California

1282 Tutors

Oxford University

123 Tutors

Yale University

2325 Tutors