gravitational force of earth is given by
so here the force will depend on the product of mass and gravity
so here force will be more if we took the condition of more masses
so here in 3rd figure
there will be maximum force of gravity on it
because it will have 6 boxes so there will be maximum mass
So figure of truck with 6 boxes on it is correct answer
Answer:
Electric potential, E = 2100 volts
Explanation:
Given that,
Electric field, E = 3000 N/C
We need to find the electric potential at a point 0.7 m above the surface, d = 0.7 m
The electric potential is given by :
V = 2100 volts
So, the electric potential at a point 0.7 m above the surface is 2100 volts. Hence, this is the required solution.
Complete Question
A thin film in air is made by putting a thin layer of acetone (n = 1.25) on a layer of water
(n = 1.33). When visible light (400 nm – 700 nm) shines normally on the film an observed from above, the bright reflected light looks kind of “purplish” with red light of wavelength 650 nm mixed some blue giving it that appearance and “greenish” light of wavelength 520 nm is completely destroyed. Determine the thickness of the acetone film. (you only need to worry about the red and green wavelengths, not the blue)
Answer:
The thickness of acetone is
Explanation:
A diagram showing this process is shown on the first uploaded image
From the question we are told that
The refractive index of acetone is
The refractive index of water is
The wavelength of the reflected light is
The wavelength of the destroyed light is
Looking at the given data we can see that the
This means that the light which the acetone-water layer would reflect will have a phase shift of
Again this make us to understand that the light reflected at the acetone layer will also have a phase shift of
Since they would be having the same phase shift the two light would interfere
For interference the condition for minima is mathematically represented as
Where d is the thickness of acetone
Substituting values
