Notice that the flux through the cube does not depend on aaa or ccc. Equivalently, if we were to set b=0b=0, so that the electri
1 answer:
Answer:
q_{int} = 0 Ф=0
Explanation:
The flow of the electric field is given by the Gauss equation
Ф = ∫ E .dA = /ε₀
In this equation we see that the flow is proportional to the charge on the face inside the surface, in this case the charge is zero, therefore the flow must also be zero.
Another way of looking at it is that the normal vector to the surface has an opposite direction on each of the faces, since the electric field is constant, it can be taken from the integral and the change from the normal to the surface gives zero, so the flow is also zero
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Answer:
The correct options are:
B) They have the same wave speed as visible light
D) They have a lower frequency than gamma rays.
Explanation:
B) Ultraviolet rays, commonly known as UV rays, are a type of electromagnetic ways. As electromagnetic waves, in the layman's term, are all kinds of life that can be identified, all electromagnetic waves (UV rays, visible light, infrared, radio etc) all travel with the same velocity, that is the speed of light, given as v = 3 × 10⁸ m/s
D) The frequency of all electromagnetic rays can be found by electromagnetic spectrum (picture attached below).
We can clearly see in the picture that the frequencies of UV rays lie at about 10¹⁵ - 10¹⁶ Hz which is lower than the frequency of Gamma ray, which lie at about 10²⁰ Hz.
