Navegando por Autor "PEREZ, Silvana"
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Item Acesso aberto (Open Access) O estudo do movimento browniano com material de baixo custo(Universidade Federal do Pará, 2017-07) PEREZ, Silvana; MAIA, Noel das Chagas; NASCIMENTO, Cristovão Silva; CASTRO, Bárbara Fernandes do NascimentoThe study of Brownian motion is seen in modern physics disciplines of undergraduate courses in physics, following a theoretical or laboratory approach, in this case usually involving reasonably sophisticated equipment. This work describes a proposal for the implementation of the experiment in high school, designed and developed by students of the last semester of the night course of licentiate in Physics of the Federal University of Para, as part of the activities of a discipline of Statistical Physics. The ease of assembly of the experiment, combined with the use of computational technologies to analyze the results, makes the technique easily implemented in high school, enabling the student to discuss historical aspects of the development of atomic models, as well as to perform the experimental measurement of the number of Avogrado, usually seen in Chemistry, in a mechanized way.Item Acesso aberto (Open Access) Medindo a velocidade do som utilizando figuras de Lissajous(Universidade Federal do Pará, 2015-09) MAGNO, Fátima Nazaré Baraúna; SOUZA, João Furtado de; PEREZ, SilvanaThere are several techniques to obtain the sound velocity in air, from the very simple ones, which use the relation between distances and time, until the more sophisticated ones, associated with oscillatory phenomena. In this work we propose an experimental aparathus which involves the Lissajous figures and ressonance tubes. The physical phenomena that appear in the process allow the student to observe and understand several ondulatory processes, as well as the superposition principle and can be applied to engenier and physics undergraduate students.