
You just do the calculations.
Answer:
The thickness of the oil film is 198 nm.
Explanation:
Given that,
Refractive index of glass plate = 1.60
Refractive index of oil = 1.29
Wavelength = 511 nm
We need to calculate the thickness of the oil film
Using formula of path difference


Where, n = refractive index
t = thickness
= wavelength
Put the value into the formula



Hence, The thickness of the oil film is 198 nm.
Answer:
A.without a long antenna, 're signal will not travel far
UMUC. this is for the blank answer.
The key formula ===> Voltage = (current) x (resistance)
Plug in the numbers given ===> Voltage = (3.6 A) x (5.0 ohms)
Dooda multiplication ===> Voltage = 18 volts