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Facoltā di Scienze Agrarie e Alimentari Universitā degli Studi di Milano
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Code: G2706-
Teacher:  Francesco Broggi
CFU subdivision: Lectures: 4
Practices in classroom: 2
Basic aims:  The aim of the course is to provide the necessary basis for the understanding of the main physical phenomena of general interest, with particular focus on subjects linked to other Degree courses.
Acquired skills:  The student acquires basic knowledge necessary for the understanding and interpretation of main physical phenomena, in particular in the field mechanics, fluid dynamics, thermodynamics and light-matter interaction.
Course contents:  After a short mathematical review, the fundamental concepts and working tools of Physics (dimensions and units, scalars and vectors) are introduced. The basic laws of kinematics with main examples of motion are described, followed by the fundamental laws of dynamics . The laws of statics and dynamics of perfect fluids and the kinetic theory of gases are described. The main concepts of thermodynamics are introduced, and the main thermodynamic transformations are described. Finally, the main concepts of electricity are illustrated and the electromagnetic nature of light is described together with the fundamental laws of its interactions with the matter.
Program:  THE LANGUAGE OF PHYSICS Fundamental physical quantities and measurement units. Order of magnitude in numerical calculations. Scalars and vectors. Recalls of basic trigonometry. The meaning of derivative and integration. MECHANICS Position and the law of motion, velocity and acceleration. Constant speed and constant acceleration cases. Vectorial form of law of motion. Rotational and linear motion. Angular velocity. Force and mass. Principles of dynamics. Weight and gravitational force. Friction. Work and kinetic energy. Mechanical energy conservation. Mechanical power. Torque. Center of mass and static equilibrium. PHYSICS OF FLUIDS Molecular interactions and properties of fluids. Pressure and density. Fundamental laws of statics of fluids. Surface tension. Adhesion, cohesion and capillary action. Volumetric flow and equation of continuity. Bernoulli's theorem. Viscosity and real fluids. Diffusion and osmosis. Transport of fluids in plants. HEAT AND ENERGY Heat, energy, temperature. Heat-work equivalence. Scale of energy content in bodies. Specific heat and heat of bodies. Changes state. Latent heat. Humidity, evaporation, drying. Heat. Temperature and internal energy of a body. Work of a fluid under pressure. 1st principle of thermodynamics. Thermodynamic efficiency. Basic operation of combustion engine, refrigeration and heat pump. ELECTRICITY AND ELECTROMAGNETISM Charge. Coulomb's law. Work and electric potential. Dielectrics and conductors. Current. Electric energy and electric power. Resistance and Ohm's law. Nature of the magnetism in matter. Electromagnetic induction. AC. Generator and electric motor. Transformer. RADIATION AND MATTER Electromagnetic radiation. Wavelength and the electromagnetic spectrum. Nature of light. Chlorophyll and photosynthesis. Absorption, reflection and transmission of radiation. Beer-Lambert law.Radiation heat transfer. Greenhouse effect and global warming. Conservation and energy balance in the matter.
Prerequisites:  Elementary algebra; trigonometry; logarithms; functions
and their properties; derivatives and definite integrals (with
their geometric interpretation).
Preparatory instructions:  Mathematics
Learning materials:  website: http://mrossif.ariel.ctu.unimi.it The summary
slides and exercises published on the website, together with
a good textbook, can assist the student in reaching a good
level of preparation for the exam.
Other info:  Exam: written exam and short final oral discussion.
Program of Physics (pdf version)
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