Relation of physics to technology?
Technology is nothing without Physics. Every technology involves Physics. Examples are the LRT's, computers, cellular phones, or any electronics using electricity which is involved in the study of Physics. The computer will not also work without the magnets and loops of wires which are also involved in the study of Physics.
Physics deals with understanding of the natural world, while technology aims to apply this understanding into the man-made world. Technology might even be considered as the offspring of Physics. The world wide web, laser, superconductors and semiconductors that form the foundations of our modern technology were all invented by physicists.