Answer:
200 nm
Explanation:
We need a constructive interference to see the bright reflection
we know that
where m=1 and
is the wavelength of the gasoline
so 
putting the value of m and
in thickness equation

so the thickness of the film will be 200 nm
Answer:
The title tag is basically your saved document
Save as and poof
High Hopes^^
Barry-
Answer: BeeWare is an open-source library that can be used to develop mobile apps in Python, where all of the objects look the same, no matter what platform it is displayed on. In contrast, the Kivy library uses native objects, so that applications built with it will look like other apps on that platform.
Explanation: