I'm going to remark that "The speed of light is 3 million meters per second" is NEVER correct. The speed of light in vacuum ... within 0.07% ... is 3 hundredmillion meters per second. The speed is different in any material medium, but a speed of 3 million m/s would imply a medium with a refractive index of 100, and I'm pretty sure that no such material exists.
It is never correct because the figure mentioned in the question is wrong by two orders of magnitude.
The third answer. It's always the third answer.
The statement is correct.
First of all it's 300 million metres per second (299,792,458 m/s). this is in a vacuum when the speed of electromagnetic radiation is at its greatest.
Yes; your statement is correct.
It is not a sentence. There is no main verb.
"What I did is" is correct. It does not matter that the doing occurred in the past: it is still what I did, and will always be what I did. The answer below represents a very popular misuse of tenses. You are talking about something you did in the past, because you are using "did", therefore the correct statement is, "What I did was..." If you were to use the verb "is" or "to be" then that means you are speaking about the present, so the correct statement using this verb is "What I am doing is..."
The speed of light, or c, is a constant. The speed of light is exactly 299,792,458 meters per second IN A VACUUM. That's 670,616,629.2 miles per hour or 983,571,056 feet per second.
explain why a square i always symetric
The statement, 'i am afraid of the rains' could be perfectly correct, if the "i" were capitalized. However, this does not mean quite the same thing as the more common statement, 'I am afraid of the rain'. In the first statement, "rains" means "instances of rainfall". For example, "In most summers, northern Germany has frequent rains. Therefore, when I travel to Germany in summer, I always carry a large umbrella, because I am afraid of the rains."
It is always true because two congruent angles that are complementary both measure 45 degrees.
Symptoms are caused by radiation-destroying cells. ============================ Something tells me there was a third-party list involved here somehow. No matter. All of them are. Not every statement is a "fact", but a "fact" is always correct..
A statement about a natural phenomenon is not necessarily scientific, but if the phenomenon has been studied in detail and the scientific method applied, then the statement becomes scientific. Example: The Sun rises in the east and sets in the west is not a scientific statement, but if the rising and setting is studied and angles noted over a 12-month period, and a theory is formed to explain it which says that the Earth rotates about an axis that is inclined to its orbit round the Sun, with numbers, that is scientific. Being scientific does not mean it is the truth or even correct because it might be disproved, or another better theory can always come along later, but at least it is scientific.