Answer:
Speed
Explanation:
The distance traveled by an object in a unit of time is speed
Answer:
The outer core is a liquid
Explanation:
The outer core is a fluid composed of iron and nickel
Answer:
D. because the light is reflected back into the fiber along its sides
Explanation:
The fiber is constructed in a way that the light is bent/reflected/refracted toward the center core of glass. So, from the center core, there is a layer above it that has a different propagation than the core, and above that the same thing. To give you a real world visual example, if you look down in a pool of water, then stick a straight stick into it, you see that the straight stick appears to bend. That is what is happening to the light as it travels through a different medium (air to water). This same effect is incorporated in the fiber optic cable construction.
Answer:
if im not mistaken i think its d let me know if correct plz