# PHYSICS I (THERMAL FLUID MECH. WITH LABORATORY)

## Learning outcomes of the course unit

To provide basic mathematical and physical tools to approach issues of increasing complexity; introduce the student to the study and application of the scientific method, the basic research tool in any field of science; illustrate the most significant aspects of natural phenomena, with particular reference to the measurement of quantities that comprise them; describe, within a context of logical continuity, the most common physical properties that provide support and interpretation for biomedical-related quantities.

## Course contents summary

Classroom lectures:

Introduction to the methodology of physical sciences. International system of units of measure. Samples of time, length and mass. Overview of instruments and errors of measure

Scalar quantities and vector quantities. Vector operations.

Reference systems. Uniform rectilinear motion and uniformly accelerated motion. Motion of bodies in free-fall. Speed and acceleration in three-dimensional motion. Uniform circular motion. Period and frequency. Reference systems in motion in relation to each other.

The concept of force. Three principles of dynamics. Mass and weight. Inclined plane. Frictional force. Simple harmonic motion. Simple pendulum. Motion of a material point under the action of elastic force. Elastic waves.

Work and energy. Spring. Weight force. Kinetic energy. Theorem of kinetic energy. Power. Potential energy. Conservative and non-conservative forces. Conservation of mechanical energy .

Momentum of a particle system. Conservation of the quantity of motion in an isolated system. Collisions in two and three dimensions.

Definition of fluid. Density. Pressure and its units of measure. Pressure variation in a fluid at rest: Stevino's law. Pascal's principle. Archimede's principle. Pressure measurement: Torricelli's barometer and open tube manometer. Lines of flow and continuity equation. Bernoulli's equation. Real liquids and Poiseuille's theorem.

Thermometry, calorimetry and the zeroth law of thermodynamics. The first law and the conservation of energy. Ideal gases and real gases. The second law of thermodynamics and entropy. Thermodynamics applied to thermal machines.

Laboratory Exercises:

Length measurements. Errors and propagation of errors.

Pascal's Law. Stevino's law. Archimede's principle. Density measurements.

Surface tension. Minimum surface. Surface tension measurement.

Fluid dynamics. Bernoulli's theorem. Real liquids and Poiseuille's theorem.

Non Newtonian fluids.

## Recommended readings

1. Lecture notes.

2. Bersani, Bettati, Biagi, Capozzi, Feroci, Lepore, Mita, Ortalli, Roberti, Viglino, Vitturi: Fisica biomedica,

Ed. Piccin Nuova Libraria (Padova).

3. Giambattista, McCarthy Richardson, Richardson:

Fisica Generale,

Ed. McGraw-Hill (Milano).

4. J. Walker:

Fondamenti di Fisica,

Ed. Zanichelli.

5. Scannicchio:

Fisica Biomedica,

Ed. EdiSES (Napoli).

6. Resources and links from the Internet

## Teaching methods

Classroom lectures and lab practice.

## Assessment methods and criteria

Written exam