Determinant calculation by sarrus diagram

If A and B moves with acceleration a as shown in diagram calculate accelration of C with respect to B .

Determination of age of plants by calculating annual rings

Can you interchange the positions of the battery in the auxiliary circuit and cell whose emf is to be determined in potentiometer circuit diagram?

Evaluate =|2-134121-15| by using Sarrus diagram.

Describe an activity to determine the melting point of ice with a diagram.

(i) Define a neutral point. (ii) In the diagram below AB is a magnet and CD is an iron bar. Study the diagram and determine the polarities at the ends A,B and D.