v = final velocity
u = initial velocity
a = rate of acceleration
t = time
A body, that starts off with a velocity u, and has a constant rate of acceleration a, will have a velocity v after a time t (with appropriate units).
Number density.
I think you mean Newton's equation. Force = mass * acceleration
amount of heat energy
I think you mean this as an answer, not a question. An expression does not have an equals sign (e.g 2x4). An equation does have an equals sign (e.g 2x4=8).
a and b are constants (and c is too). You can substitute any set of three real numbers for these letters, and you will still have an equation for a line. However, different values will result in different slopes and positions for the line. In fact, the values of a, b, and c are what determine the shape of the line.
If you mean single Roman letters, they can either stand for numbers or abbreviations.If you mean single Roman letters, they can either stand for numbers or abbreviations.If you mean single Roman letters, they can either stand for numbers or abbreviations.If you mean single Roman letters, they can either stand for numbers or abbreviations.If you mean single Roman letters, they can either stand for numbers or abbreviations.If you mean single Roman letters, they can either stand for numbers or abbreviations.If you mean single Roman letters, they can either stand for numbers or abbreviations.If you mean single Roman letters, they can either stand for numbers or abbreviations.If you mean single Roman letters, they can either stand for numbers or abbreviations.
equals
I assume you mean e = m time c squared. "e" is energy; "m" is the mass; "c" is the speed of light.
the T stands for Tele and the V stands for Vision witch equals TeleVision
Number density.
I think you mean Newton's equation. Force = mass * acceleration
It means to find what numbers the variables (the letters) must be in order to make the equation a true statement.
amount of heat energy
I think you mean this as an answer, not a question. An expression does not have an equals sign (e.g 2x4). An equation does have an equals sign (e.g 2x4=8).
reacting to form
There is no Such Thing As A Free Lunch.
It means to find what numbers the variables (the letters) must be in order to make the equation a true statement.