Assignment 2A

I faced some difficulties doing my assignment 2A...I did try my best
to do the questions and to clarify my doubts with Ms Jee..I felt questions
2C and 3 were the challenging ones for me..After using the ratio method,i
understand the concept better..I also noticed tat forgetting to write the
units and not rounding off to three significant figures will result to deduction
of marks..