Select Academic Year:     2017/2018 2018/2019 2019/2020 2020/2021 2021/2022 2022/2023
Professor
DANIELE CHIRIU (Tit.)
ANDREA SANNA
Period
First Semester 
Teaching style
Convenzionale 
Lingua Insegnamento
ITALIANO 



Informazioni aggiuntive

Course Curriculum CFU Length(h)
[70/92]  ELECTRICAL ENERGY ENGINEERING FOR SUSTAINABLE DEVELOPMENT [92/00 - Ord. 2022]  PERCORSO COMUNE 8 80
[70/94]  ELECTRONIC, COMPUTER AND TELECOMMUNICATION ENGINEERING [94/00 - Ord. 2022]  PERCORSO COMUNE 8 80

Objectives

This course of Physics 1 is a basic introduction to:
i) Elementary concepts of classical mechanics and thermodynamics;
ii) Conceptual schemes and tools to analyze physical phenomena (“problem solving”)
The course aims to provide the student with the physical knowledge and skills required to pursue the educational objectives for graduate studies in Engineering. More specifically, the expected learning outcomes are:
1) Knowledge and understanding: Knowledge of the basic foundations of kinematics, dynamics, mechanical waves and thermodynamics and understanding of the related physical phenomena, with particular emphasis to those typical of Engineering.
2) Applying knowledge and understanding: Capability of applying the acquired knowledge for solving elementary problems of kinematics and dynamics of the material point in one and two dimensions; kinematics and dynamics of the rigid body; equilibrium of the rigid body; mechanical waves (wave in a string and sound waves); thermodynamics (heat transmission, thermal and refrigerating machines, transformation of an ideal gas).
3) Making judgments: Capability of selecting relevant information of a problem and of introducing suitable simplifications.
4) Communication skills: Capability of describing physical phenomena of mechanics and thermodynamics using a correct scientific terminology. Communication skills should allow the student to discuss with both expert and not experts in the field.
5) Learning skills: Physical/mathematical conceptual skills necessary to deal with more advanced courses of Applied Physics and Engineering with a good degree of autonomy.

Objectives

This course of Physics 1 is a basic introduction to:
i) Elementary concepts of classical mechanics and thermodynamics;
ii) Conceptual schemes and tools to analyze physical phenomena (“problem-solving”)
The course aims to provide the student with the physical knowledge and skills required to pursue the educational objectives for graduate studies in Engineering. More specifically, the expected learning outcomes are:
1) Knowledge and understanding: Knowledge of the basic foundations of kinematics, dynamics, mechanical waves and thermodynamics and understanding of the related physical phenomena, with particular emphasis to those typical of Engineering.
2) Applying knowledge and understanding: Capability of applying the acquired knowledge for solving elementary problems of kinematics and dynamics of the material point in one and two dimensions; kinematics and dynamics of the rigid body; equilibrium of the rigid body; mechanical waves (wave in a string and sound waves); thermodynamics (heat transmission, thermal and refrigerating machines, transformation of an ideal gas).
3) Making judgments: Capability of selecting relevant information of a problem and of introducing suitable simplifications.
4) Communication skills: Capability of describing physical phenomena of mechanics and thermodynamics using a correct scientific terminology. Communication skills should allow the student to discuss with both expert and not experts in the field.
5) Learning skills: Physical/mathematical conceptual skills necessary to deal with more advanced courses of Applied Physics and Engineering with a good degree of autonomy.

Prerequisites

Prerequisite skills and knowledge are those foreseen for the access test to the first year. More advanced mathematical tools will be provided by the course of mathematical analysis.

Contents

1 - Basic notions
Physical quantities. International system of units (SI). Length, time, mass. Dimensional analysis
2 - Kinematics
Motion. Position and displacement. Average velocity and average speed. Instantaneous velocity. Acceleration. Motion with constant acceleration. Free-fall acceleration. Bidimensional motion. Projectile motion. Uniform circular motion: angular velocity, centripetal acceleration. Relative motion in two dimensions.
3 - Dynamics
Newton’s first law. Force. Mass. Newton’s second law. Some particular forces. Newton’s third law. Friction. Properties of friction. The drag force and terminal speed. Dynamics of uniform circular motion. Kinetics energy. Work. Work and kinetic energy. Work done by the gravitational force. Work done by a general variable force. Work done by a spring force. Power. Conservative forces and potential energy. Conservation of mechanical energy. Potential energy curves. Energy conservation. Centre of mass. Newton’s second law for a system of particles. Linear momentum. Linear momentum of a system of particles. Conservation of linear momentum. Systems with varying mass. Collision, impulse and linear momentum. Momentum and kinetic energy in collisions. Inelastic and elastic collisions.
4 - Rotational dynamics
Rotational variables and vectors. Rotation with constant angular acceleration. Kinetic energy of rotation. Rotational inertia. Newton’s second law for rotation. Work and rotational kinetic energy. Rolling. Angular momentum. Newton’s second law in angular form. Angular momentum of a system of particles. Angular momentum of a rigid body rotating about a fixed axis. Conservation of angular momentum. Requirements of equilibrium. Centre of gravity.
5 – Oscillations
Oscillations. Simple harmonic motion. Energetics of harmonic motions. Simple pendulum. Physical pendulum. Damped simple harmonic motion. Forced oscillations and resonance.
6 - Waves
Transverse and longitudinal waves. Wavelength and frequency. Speed of a traveling wave. Wave speed on a stretched string. Energy and power of a wave traveling along a string. Principle of superposition for waves. Standing waves. Standing waves and resonance. Sound waves. Speed of sound. Interference. Intensity and sound level. Beats. Basic notions on complex waves.Doppler effect.
7 - Thermodynamics
Zeroth law of thermodynamics. Measuring temperature. Thermometric scales. Thermal expansion. Temperature and heat. Absorption of heat by solids and liquids. Heat and work. First law of thermodynamics. Some special cases of the first law of thermodynamics. Heat transfer mechanisms. Ideal gases. Pressure, temperature, and RMS speed. Molar specific heats of an ideal gas. Degrees of freedom and molar specific heats. Adiabatic expansion of an ideal gas. Carnot’s cycle. Irreversible and reversible processes. Entropy and second law of thermodynamics. Engines and refrigerators

Teaching Methods

Lectures will be prevalently held in classrooms, also integrated with online teaching resources, by using specific online platforms managed by the University of Cagliari.
The course structure is based on lectures and exercises.
-Interactive lectures: "peer instruction". For each topic of the course, quizzes will be available in the digital platform via any multimedia device.
- Additional help to students can be provided during the office hours, namely two hours a week during the lecture semester and by appointment otherwise.
- Every weak, student must solve specific exercises concerning the topics addressed during the class lectures. Exercises can be solved at home by using digital platforms. Further information can be exchanged also via the web site of the course or via email.

The course is organized as follows:
Lectures: 64 hours
Recitations: 16 hours

Verification of learning

Ongoing tests
- 2 partial tests, one in the middle of the course and one at the end. These two tests provide for a maximum grade of 30/30 and the final grade will be determined as the arithmetic average of the two partial tests.
- oral test (on request). This test can be requested starting from an average mark of the partial tests equal to or greater than 18/30. The test is functional to evaluate the student's ability to describe the physical phenomena studied during the course using correct scientific terminology and the ability to set up and solve more complex problems.

Tests scheduled in the general exam sessions

- Written test. This test has a maximum grade of 30/30 and aims to assess the student's ability to solve problems in a quantitative way
- oral test (on request). This test can be requested starting from the mark of the written tests equal to or greater than 18/30. The test is functional to evaluate the student's ability to describe the physical phenomena studied during the course using correct scientific terminology and the ability to set up and solve more complex problems.

At each session, the student can book himself for the tests he wishes to carry out.

Honors will be awarded to those who have accumulated a score equal to or greater than 31/30

Texts

Main text:
1. Halliday, Resnick, Walker: Fondamenti di Fisica (Vol. Meccanica-Termologia oppure Volume unico), Ambrosiana.
Further auxiliary texts:
2. P.Mazzoldi, M.Nigro, C.Voci: Elementi di Fisica, ( Vol. Meccanica-Termodinamica e Vol. Onde), Edises.
3. J. Serway, Fisica Volume 1, Edises.
4. H.D. Young, R.A. Freedom, A. L. Ford: Principi di Fisica (vol. 1 Meccanica, Onde e Termodinamica) Pearson Italia

Questionnaire and social

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