Consider the following statements:
1. Dimensional analysis is used to determine the number of variables involved in a certain phenomenon.
2. The group of repeating variables in dimensional is should include all the fundamental units.
3. Buckingham’s p theorem stipulates the number of dimensionless groups for a given phenomenon.
4. The coefficient in Chezy’s equation has no dimension
Which of these are correct?
a. 1, 2, 3 and 4 b. 2, 3 and 4
c. 1 and 4 d. 2 and 3