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 .

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.

What do you mean by equilibrium and equilibrium price ? Explain determination of price under perfect competition . Use diagram.