The most polite out of all Science branches. look at it's basic definition: 'The branch of Science concerned with the nature and properties of matter and energy.'  But yes, Physics is a branch of Science that concerns itself with how exactly something with property work basically. It wants to understand why levers make things easier, why different materials have different heat capacities. But here, Physics is a bit different. In Medical Technology, Physics explains why defiblirators work at what happens during it. Physics explains why and how Ultrasound exist. Still think it's basic calculations and logic? Not really, right?