I believe that don't have to tell you how important is physics for engineers. On this site I have placed plenty of examples from various field of physics. Physics exercises which are resolved here, will be very helpful in physics understanding. Physics is in general divided into two main parts. First is classical physics in which we examine nature of macroscopic objects. In brief classical physics treats about obejcts which we can see and touch. Second is modern physics in which we examine microscopic or a lot of smaller objects. In brief modern physics treats about obejcts which we can't see and touch.
Who does never meet E=mc2 formula? It is probably the most famous formula in the world. This formula given for us by Albert Einstein ties in one equation mass and energy. In short we can say that E=mc2 tells us that mass and energy are equivalent. I believe that you are interested to know from where this fromula cames from.
Mechanics is a field of physics. On my webiste it is whole branch about mechanics divided to four mian parts like: statics, kinematics, dynamics and mechanics of materials.
mechanics examplesHarmonic vibrations are very interesting phenomena in physics. Knonwlage about harmonic vibrations in electical systems and mechanical systems is very important. You will find here a few examples which will try to explain you a nature of harmonic vibrations.
Why some objects stay on water surface level or sink under water? Why some objects fly in air or stay on the ground? Answer for that question gave as long time ago Archimedes. Explanation for mentioned question is in Archimedes's law.