Answer:


Explanation:
d = Gap between slits = 0.142 mm
= Wavelength of light = 576 nm
L = Distance between light and screen = 3.5 m
m = Order = 2
Difference in path length is given by

The difference in path lengths is 
For dark fringe the difference in path length is given by

The difference in path length is 
The 1st one goes two added sodoes the second one then the third goes to removed then the fourth goes to added and the rest go to removed
<span>Whatever the focus of the experiment is, plus any others factors that might influence the outcome of the experiment. If you are testing a new cancer drug, the experimental group and the control group must both be people with the same type of cancer, and both be a representative distribution of the population, all races, genders, ages, etc. You want the only difference in the two groups to be what you are studying, i.e. the effects of the drug.</span>
D) decreasing the temperature lowers the average kinetic energy of the reactants.