Learning outcomes of the course unit
The course aims to provide the student with fundamental knowledge of the laws of physics and of the application of the laws to the study of the most common phenomena in order to be able to describe and interpret investigation and measurement techniques, which will then be used in research or working laboratories. Particular attention will be placed on units, orders, appropriate use of terms and development of ability to synthetize. The fundamental equations will be explained and applied, with acknowledgement of the limits of their validity, to the case of simple problems.
Attendance of the Istituzioni di Matematiche course is recommended
Course contents summary
Measurements - Units - Physical quantities - Vectors Operations on vectors - Motion - Scalar and vector velocity - Acceleration - Motion in two and three dimensions - Velocity and mean velocity - Acceleration and mean acceleration - Projectile motion - Uniform circular motion - Relative motion - Newton's laws - Forces - Mass - Applications of Newton's laws - Kinetic energy and work - Power - Potential energy - Conservative forces - Work done by non-conservative forces - Conservation of energy
System mechanics and rigid body mechanics
Particle systems - Centre of mass - Newton's second law for a particle system - Momentum of a particle system - Conservation of momentum - - External forces and internal energy changes - Collisions - Impulse and momentum - Elastic collisions in one dimension - Inelastic collisions in one dimension - Rotation - Rotational variables - Rotation with constant angular acceleration - Linear and angular variables - Rotational kinetic energy - Moment of inertia - Moment of a force - Work, power and work-kinetic energy theorem - Rolling - Angular momentum - Conservation of angular momentum
Fluid mechanics - Waves in elastic media
Fluids - Density and pressure - Fluids at rest - Measurement of pressure - Pascal's law - Archimedean principle - Ideal fluids in motion - Streamlines and continuity equation - Bernoulli equation - Oscillations - Simple, damped and forced harmonic motion, - Pendulums - Resonance - Waves - Transverse and longitudinal waves - Wavelength and frequency - Speed of a moving wave - Energy and power of a moving wave - The superposition principle - Interference - Phase vectors - Stationary waves and resonance - Acoustic waves - Speed of sound - Interference - Sound intensity and level - Sources of musical sounds - Beats - Doppler effect
Newton's law of gravitation - Inertial mass and gravitational mass - Terrestrial gravitation: the weight of bodies and the fall of bodies - Kepler's laws of planetary motion - Gravitational potential energy - Artificial satellites and interplanetary probes - Gravitation, astrophysics and cosmology
Heat and temperature
Thermal equilibrium and zeroth law of thermodynamics - Temperature and heat - Temperature measurement and temperature scales - Thermal expansion - Heat capacity and specific heat - Changes of state and latent heat - Propagation of heat
The first law of thermodynamics
Heat and work - Thermodynamic system - Internal energy - Thermodynamic transformations - Reversible and irreversible processes - Graphical representation of a transformation - Gas as a thermodynamic system - Work of pressure forces - Molar specific heat at constant volume and at constant pressure - Ideal gas law - Real gases and van der Waals equation - The first law of thermodynamics - Heat, work and internal energy in the thermodynamic processes of the ideal gas: isothermal, isobaric, isochoric and adiabatic.
The second law of thermodynamics
Operation of heat engines - Reversible engines and the Carnot cycle - Irreversibility of thermal processes - The second law of thermodynamics in the Kelvin and Clausius formulations - Efficiency of heat engines - Absolute thermodynamic temperature and efficiency of the Carnot cycle - Refrigerators - The entropy function - Entropy changes in reversible and irreversible thermodynamic processes - Entropy and heat engines - Natural processes and energy degradation.
Kinetic theory of gases
Ideal gas model - Mean free path - Distribution of molecular velocities - Kinetic-molecular interpretation of the pressure and temperature of a gas - Internal energy and equipartition principle - Molar specific heats of an ideal gas - Statistical interpretation of the second law of thermodynamics - Entropy and probability: disorder and information.
The electric field<
D. Halliday, R. Resnick, J. Walker: Fondamenti di Fisica, CEA
James S. Walker: Fondamenti di Fisica, Zanichelli
Theoretical lectures and exercises.
The written test is simple (texts carried out in previous years with solutions are supplied to the students) and is used for admission to the oral examination.