Answer:
the minimum thickness (in nm) t = 102.5 nm
Explanation:
t = thickness of the film
n = index of refraction = 1.61
m = order = 1
∝ = wavelength = 330 x 10-9 m
so we have the formula
2nt = m∝
2 (1.61) t = (1) (330 x 10-9)
then...
t = 1.025 x 10-7 m
converting...
t = 102.5 nm
<>"And, water is called the "universal solvent" because it dissolves more substances than any other liquid. This is important to every living thing on earth. It means that wherever water goes, either through the ground or through our bodies, it takes along valuable chemicals, minerals, and nutrients."<>
To solve this problem we will apply the concepts related to wavelength, as well as Rayleigh's Criterion or Optical resolution, the optical limit due to diffraction can be calculated empirically from the following relationship,
Here,
= Wavelength
d= Diameter of aperture
= Angular resolution or diffraction angle
Our values are given as,
The frequency of the sound is
The speed of the sound is
The wavelength of the sound is
Here,
v = Velocity of the wave
f = Frequency
Replacing,
The diffraction condition is then,
Replacing,
d = 0.24 m
Therefore the diameter should be 0.24m
Answer:
Insulator
Explanation:
A body that has relatively few free electrons and offers comparatively great resistance to the movement of free electrons is an <u>INSULATOR</u>.
An insulator is a body that offers resistance to free flow of electrons. Insulators do not allow the passage of electric current. Examples of Insulators are glass, plastic, rubber, dry wood, paper, etc. The opposite of an insulator is a conductor. A conductor is body that allows free flow of electrons. Conductors allow the passage of electric current. Metals are the most common example of conductors such as copper, aluminum, gold, and silver. Other examples of conductors include grahite and human body.
The answer is D. A more reactive metal replaces a less reactive metal in a chemical reaction.