To develop this problem it is necessary to apply the concepts related to destructive interaction.
By definition we know that it is given as
Where,
l = Distance between slits
m = Any integer representing the number of repetition of spectrum
There is a change in phase at the upper side of the film which causes the phase shift since the index of refraction of the soap film is greater than that of air.
The extra traveled distance is twice the film thickness since the light shines perpendicularly and the wave travels back and fourth through the film, so
(second smalles nonzero thickness) we have that
The index of refraction of soap is given so the relationship is
Substituting the previos equation
Re, arrange to find \lambda_{vacuum}
Therefore the vacuum wavelength of the light is 575.89nm
The correct answer for the question that is being presented above is this one: "(d) the magnitude of the normal force on the box from the ramp." A box is on a ramp that is at angle θ to the horizontal. As θ is increased from zero, and before the box slips, do the following increase, decrease, or remain the same and <span> the magnitude of the normal force on the box from the ramp.</span>
Answer:
true
Explanation:
with out trees we would have no air with out animals the envirounment would slowly decay
Since the mass is moving in a horizontal circle, we do not look at gravity, tension in string or weight of the mass.
<em>
Time period for one cycle around circle = T = 0.42 seconds</em>
<em>Tangential Velocity or speed of the mass = </em>
<em> tangential distance traveled in 1 cycle or revolution / time period</em>
= circumference of circle / time period
<em> = 2 π radius / T = 2 π 1 meter / 0.42 sec </em>
<em> = 14.96 m/s</em>
Answer:
the energy comes from the increase in the electric field
Explanation:
The capacitance is
C = ε₀ A / d
The electric charge on the condenser plates
Q = C ΔV
The stored electrical energy is
U = ½ C ΔV²
ΔV = E d
U = ½ (ε₀ A / d) (E d)²
U = ½ ε₀ A d E²
We see that the stored energy is proportional to the square of the electric field, so the capacitor can increase its energy with increasing voltage
In short, the energy comes from the increase in the electric field
