Question: Cross regulators in main canals are provided (A) To regulate water supply in the distributaries (B) To increase water head upstream when a main canal

Cross regulators in main canals are provided
(A) To regulate water supply in the distributaries
(B) To increase water head upstream when a main canal is running with low supplies
(C) To overflow excessive flow of water
(D) None of these

12. Show that cp - (j + j + j ) = c p. 13. Show that (E-cB) is relativistically invariant. >> 14. Show that (EB) is relativistically invariant. 15. Prove that (E-cB) is relativistically invariant. Hence show that if E= cB in one inertial frame, then E' cB' in any other frame.

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