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We know P=IV and that V=IR. Therefore as we are only given I and R in the question we can make the substitution for V so that P=I²R.
By plugging in the numbers we get: P=2²x 12=...

use the smile technique

4²= 2^2x2=2⁴2⁴x2⁴= 2⁸ Explanation: In order to simplify powers you need to get the same base number. In order to ge...

This is the net passive movement of molecules down the concentration gradient from an area of high concentration to an area of lower concentration, through ...

The greenhouse effect is a process that warms the planets temperature to warmer than it would be without an atmosphere. It makes the planet a comfortable place to live. It works like a greenhouse or glas...