If one of the pipes has a much smaller diameter than the other and are placed horizontally then form both sides of Bernoulli's equation, we can drop the term
If denotes the total number of molecules in cubic vessel such that m is mass of each milecule and I is length of each side of vessel, then mN/I3gives the:
In a experiment to determine acceleration due to gravity by simple pendulum a student commits 1 % positive error in the measurement of length and 3 % negative error in the measurement of time period The percentage error in the values of g will be