Answer:
The rate at which it will radiate heat is closest to 127.2J.
Explanation:
According to Stefan's law, the heat radiated by a black body can be written as:
is directly proprtional to the 
.
where H is the amount of heat radiated and T is the surface temperature .
<u>Example</u> : The heat is transferred by radiation and an example of heat transferred by radiation is the sunlight reaching earth from sun.
<u>Note</u> : Here the temperature is expressed in Kelvin.
- Initial rate of heat ,
- Final rate of heat ,
= unknown
- Initial temperature ,
- Final temperature ,
.
The rate at which it will radiate heat is closest to 127.2J.
Answer:
He did not multiply the chlorine and oxygen atoms by the coefficient 4
Explanation:
We're not sure which pilots you're talking about, but we can be sure
that whichever ones they are, velocity is more important to them than
just plain speed is.
Velocity is speed AND its direction. I can clearly recall that when I was
taking flying lessons, and later flying solo with nobody else in the airplane
to get me out of a jam, it was not enough to know that my airspeed was
90 miles per hour. I also needed to know at ALL times that my velocity
was NOT pointed straight at the ground.
Happily, I knew, even back then, the difference between velocity and
just-plain-speed, and I'm sure that that is a big part of the reason that
I am here today to tell you the tale.
That n2 = 2*n1. That is, the index of refraction is twice as big in medium 2 since v=c/n
