Yes. It is the name of a thing.
It can be made plural obstacles
It accepts articles the obstacle, an obstacle.
No because an obstacle can be a person or things in your minds, like when you're thinking that you can't do it, that is an obstacle as well.
In general waves can: Wrap around the obstacle. This happens when the wavelength is larger than obstacle size. Bounce back as an echo off the obstacle. This happens when the wavelength is shorter than the obstacle size. Be absorbed by the obstacle. This occurs when the natural frequency of the obstacle matches the frequency of the wave...so-called resonance. Pass through the obstacle. There are several ways this can happen. But visible light passing through a glass window is one example.
The biggest obstacle to climbing Mt Kilimanjaro will depend on the particular person. For most people, the steep slopes are the biggest challenges one has to deal with on Mt. Kilimanjaro.
diffract
The noun 'noun' is an abstract noun, a word for a concept.
The word obstruction is a noun. An obstruction is something that obstructs or creates an obstacle.
No, it is an article (indefinite article), which is a form of "determiner" that determines if a noun is a specific example or any one of the examples. "An" obstacle = any obstacle "The" obstacle = a certain obstacle
The correct spelling of the plural noun is "difficulties" (an obstacle).
Yes. It refers to a difficulty, obstacle, or situation requiring resolution.
i think the antaynm (opposite) of the word obstacle is easy or of course no obstacle but i guess that doesn't really count, does it? well anyway, i know that an obstacle is SOMETHING THAT SLOWS A PERSON DOWN. in a sentence it would be " at my track meet they put up these obstacles that were really hard." an obstacle could be something that you have to do, but it difficult. if you don't think this answers your question, go on wikkepedia and see if that answers your question because wikkepedia is WAY better.(just kidding, but you should check wikkepedia.)
The possessive noun is athletes', the goal of the athletes.
The correct spelling of the noun is "obstacle" (impediment, blockage).Similar is the adjective obstetrical (medical, pertaining to pregnancy and labor).
obstacle of reading
her largest obstacle
Obstacle is correct.
that test was as difficult as n obstacle
Hurtle = verb, to move at a great speed in an uncontrolled mannerin come accents/dialectsHurdle = noun, an obstacle or difficulty