You should use the same size resistor; a 47 kilo-ohm.CommentThe correct spelling is 'kilohm'.
On a standard four band resistor: yellow, violet, black, and gold.
The time-constant is the resistance times the capacitance, so that's 47 x 47 and because the capacitance is in microfarads, the answer is in microseconds.
is 4.7 and 47 the same
47/100 is the same as 0.47
47
50
47/5
It is a linear equation in one variable, x. And although you did not ask for it, the solution is x = 94/2 = 47
It's still 47, since you are adding and subtracting the same amount.
No
The same as 4.7 seconds.