Selectivity Waves (PAU)
Con este curso gratuito de 30 lecciones en vídeo aprenderás sobre los conceptos más importantes de las Ondas para Selectividad PAU
En física, una onda (del latín unda) consiste en la propagación de una perturbación de alguna propiedad del espacio, por ejemplo, densidad, presión, campo eléctrico o campo magnético, implicando un transporte de energía sin transporte de materia. El espacio perturbado puede contener materia (aire, agua, etc.) o no (vacío).
La magnitud física cuya perturbación se propaga en el medio se expresa como una función tanto de la posición como del tiempo Matemáticamente se dice que dicha función es una onda si verifica la ecuación de ondas:
donde {\displaystyle v}v es la velocidad de propagación de la perturbación. Por ejemplo, ciertas perturbaciones de la presión de un medio, llamadas sonido, verifican la ecuación anterior, aunque algunas ecuaciones no lineales también tienen soluciones ondulatorias, por ejemplo, un solitón.
The selectivity exam is a written test that is done to students who wish to access university studies at public and private universities in Spain. This exam is part of the Baccalaureate Assessment for Access to the University (EBAU),1 previously Tests of Access to University Studies (PAU or PAEU), in which, in addition to selectivity, they count the two Baccalaureate courses. In addition, CFGS students (higher grade training cycles) can perform the specific phase of these tests in order to access degrees with limited places.
The review consisted, until its reform in 2010, of at least 20 written tests, and from the 2009/2010 two-phase academic year, a mandatory general phase composed of 4 exercises (5 in the case of autonomous communities where there are co-official languages), and a specific voluntary phase of a maximum of 4 exercises, counting in the latter phase only the two with the highest qualification.
The exam is carried out at the university to which the school of studies was attached, usually for three days in mid-June in the ordinary call, and September or July in some communities in the extraordinary, to which the student could present himself if he had not passed the first or if he wants to raise a grade. In order to access the university it is necessary to pass the selectivity and, depending on the grade obtained in the EBAU, the student can choose the university career with limit of places that he wants to take based on the cut-off note (minimum note that is used as a limit to access a certain career before all the places offered are filled) established for each degree and university. This cut-off grade varies each year and from university to university.
