Where is the **north** pole of the bar magnet, based on the magnetic field lines shown?
A. On the left end
B. On the bottom edge
C. On the top edge
D. On the right end

Anybody wanna ? (picture included? )

Determine the fraction of the magnitude of kinetic energy lost by a neutron (m1 = 1.01 u) when it collides head-on and elastically with a target particle at rest which is 21h (heavy hydrogen, m = 2.01 u).

Two rigid transformations are used to map δhjk to δlmn. the first is a translation of vertex h to vertex l. what is the second transformation? a reflection across the line containing hk a rotation about point h a reflection across the line containing hj a rotation about point k