# Physics (2020/2021)

Course code
4S00004
Credits
6
Coordinator
Alessandro Romeo
FIS/07 - APPLIED PHYSICS
Language of instruction
Italian
Teaching is organised as follows:
Activity Credits Period Academic staff Timetable
teoria 5 II semestre Alessandro Romeo

esercitazioni 1 II semestre Alessandro Romeo

### Learning outcomes

The Physics lectures aim to give a basic knowledge of the whole physics of mechanics and electromagnetism, enough for the understanding of physical phenomena in biotechnology and in life science. The lectures will have a strong applicative part with exercises in class in order to ease the comprehension of the theoretical concepts and to develop the ability in problem solving.

### Syllabus

Index:

1. Physical quantities, approximations
2. Motion in one dimension
3. Motion in two dimensions
4. Newton Laws
5. Energy
6. Momentum
7. Rotational motion
8. Gravity laws
9. Oscillation laws
10. Fluid Mechanics
11. Hints of Thermodynamics
12. Electric Field
13. Electric potential
14. Electric circuits
15. Charges in motion: electromagnetism
16. Magnetism
17. Waves
Detailed program:

-Introduction to vectors
Dimensional analysis, unit conversion, coordinate systems, trigonometry, vector and scalar quantities, scalar product, vector sum, vector product: graphical method and analytical method.

-Motion
Average speed and instantaneous speed, hints on derivatives, constant speed, average acceleration and instantaneous acceleration, falling bodies, carriers position-velocity-acceleration, projectile motion, particle in uniform circular motion, radial and tangential acceleration, relative velocity and reference systems.

-Newton's laws
Concept of Force, Newton's first law, the concept of mass, Newton's second law-resultant force, gravitational force and weight, Newton's third law, static friction and kinetic friction, uniform circular motion and Newton's law, notes on the fundamental forces) , conservative and dissipative forces.

-Energy and energy transfer
Concept of Work, work done by a constant force, work done by a variable force, the concept of kinetic energy, non-isolated systems, dynamic friction and work, potential energy, isolated systems, the concept of conservative force, potential energy from the gravitational force, theorem kinetic energy

-Quantity Momentum and impact
Momentum and its conservation, the concept of momentum, elastic collision and inelastic collision, collisions in two dimensions, the center of mass motion of a particle system.

- The rotational motion
Position, velocity and angular acceleration, concept of rigid body, rigid body in constant rotation, rigid body in constant acceleration, rotational and translational quantities, concept of rotational kinetic energy, the concept of torque, call the vector product, rigid body and resultant moment of forces, levers, definition of angular momentum, conservation of angular momentum, rolling of rigid bodies, rotational kinetic energy.

-Gravity
Outline of Kepler's laws, escape velocity, circular and elliptical orbit.

-The oscillatory motion
Particle attached to a spring, simple harmonic motion, Hooke's law, energy in a harmonic motion and soft, simple pendulum and nods of compound pendulum, damped oscillations.

- Fluid Mechanics
Concept of pressure, pressure and depth, pressure measurements, Archimedes' principle, the law of Pascal, ideal fluid, fluid dynamics and continuity equation of fluid flow, Bernoulli's theorem, viscous fluid.

- Thermodynamics
Concept of temperature, thermal expansion, concept of heat, ideal gas law, hints of statistical thermodynamics, thermodynamic transformations, entropy.

-Electric Force and electric fields
Properties of electric charges, insulators and conductors, the concept of charge, Coulomb's law, electric force, the concept of field, electric field, electric field lines, the concept of electric dipole, motion of charged particles in a uniform electric field, electrical flow, Gauss theorem (with proof), application of Gauss theorem (various examples), conductors in electrostatic equilibrium.

- Electric potential
Potential difference and electric potential, the potential difference in a uniform electric field, electric potential energy, potential in a non-uniform electric field, electric potential and electric field, electric potential of a charged conductor, capacity concept, capacitors, connection of capacitors , energy of a charged capacitor.

-Current and electric circuits
Introduction to electric current, the concept of electrical resistance, Ohm's law, resistors in series and parallel, Kirchoff's laws, Joule's law.

-Elettromagnetism
Introduction to the magnetic field, charged particle in a uniform magnetic field, magnetic force, the Lorentz force, Read Maxwell.

-Waves
Electromagnetic and mechanical waves, refractive index, interference, lenses, maxwell lenses.

### Assessment methods and criteria

The exam is written, with a number of exercises to be solved (typically from 5 to 7) following the lectures' program and similar to those that are presented in class.

The professor reserves the possibility to add an oral exam, in particular in the case where the student is very close to the sufficiency without obtaining it, or in case there is any doubt about the actual evaluation of the student or even in the case where there is doubt or suspicion that the student has copied.

For laude an additional oral exam is compulsory. In case of a poor performance the mark taken in the written exam can be reduced.

Examination methods are not differentiated between attending and not-attending students.

 Activity Author Title Publisher Year ISBN Note teoria Jewett & Serway Principi di Fisica vol.1 (Edizione 4) Edises 2008 978-88-7959-419-6 esercitazioni Jewett & Serway Principi di Fisica vol.1 (Edizione 4) Edises 2008 978-88-7959-419-6