RECURSOS DE APRENDIZAJE
-
s/t, v/t and a/t graphs of a UCM
The s/t , v/t and a/t graphs for circular movements are analogous to those for rectilinear movements.
Área de conocimientoContexto educativoTipo de recursoColecciones -
r.p.m. and r.p.s.
The speed of an MCU can be expressed in rpm and in rps (revolutions per minute and revolutions per second).
Contexto educativoTipo de recursoColecciones -
Rounding a measurement
The result of a measurement should be consistent with the measuring instrument used. How to round: you must already understand the degree of precision in the result of a measurement.
Área de conocimientoContexto educativoTipo de recursoColecciones -
Reflection
When an undulatory movement comes across an obstacle which prevents its propagation and does not absorb its energy, the waves change direction, they are reflected.
Contexto educativoTipo de recursoColecciones -
Resistors in series
Here is a circuit with two resistors connected in series, a voltmeter and an ammeter.
Área de conocimientoContexto educativoTipo de recursoColecciones -
Resistors in parallel
Two resistors connected in parallel. Here is a circuit which has two resistors connected in parallel, a voltmeter and a ammeter.
Área de conocimientoContexto educativoTipo de recursoColecciones -
Residual current circuit breaker (RCCB)
The residual current circuit breaker (RCCB) is one of the elements of a consumer unit. The following visual explains its function.
Área de conocimientoContexto educativoTipo de recursoColecciones -
Representative value
The representative value of a series of measurements is the one which we think is closest to the real value of the said measurement.
Área de conocimientoContexto educativoTipo de recursoColecciones -
Representation of forces
Forces are represented by means of vectors. A vector is an oriented sector. The following animation representes the characteristics of a vector.
Contexto educativoTipo de recursoColecciones -
Renewable energy sources
Renewable energy sources are those which after being used can be regenerated naturally or artificially. The following pictures are graphic examples rof enewable energy sources.
Área de conocimientoContexto educativoTipo de recursoColecciones -
Relativistic paradox
If at relativistic speeds bodies decrease in length, would it be possible to shut a large rocket which was travelling at the speed of light in a hangar? The answer to this question constitutes a "relativistic paradox".
Contexto educativoTipo de recursoColecciones -
Relative movement of the Earth
The educational resource shows a visual about the relative movement of the Earth: our planet is enormous compared to a train, which is why although all the earth moves, it seems to us to be still, and the sky around it the one that moves.
Área de conocimientoContexto educativoTipo de recursoColecciones -
Relative error
The relative error of a measurement is the quotient between the absolute error of the measurement and its real value.
Área de conocimientoContexto educativoTipo de recursoColecciones -
Refraction
Imagine that a wave passes from a deeper zone to another shallow zone, or vice versa. There will be refraction.
Contexto educativoTipo de recursoColecciones -
Radians per second
¿A cuántos radianes por segundo va la bola azul?
Área de conocimientoContexto educativoTipo de recursoColecciones -
Radians: what are they?
Angles can be measured with sexagesimal degrees. A right angle is equal to 90 degrees. Radians are another way of measuring angles.
Contexto educativoTipo de recursoColecciones -
Radioactive constant
The radioactive constant or decay constant, is a coefficient of proportionality which relates the atoms which disappear in a period of time t, with the initial atoms for each radioactive nuclide.
Contexto educativoTipo de recursoColecciones -
Radioactive equilibrium
The activities of the isotopes formed at each stage of the radioactive series are equal to each other after some time. It is then said that radioactive equilibrium has been reached.
Contexto educativoTipo de recursoColecciones -
Radioactive particles
Radiation emitted by radioactive bodies.The radiation emitted by radioactive substances behaves differently when it passes through electric and magnetic fields.
Contexto educativoTipo de recursoColecciones -
Radioactivity
The activity of a sample of a radioactive substance is the number of nuclei which disappear per unit of time and represents the speed of decay.
Contexto educativoTipo de recursoColecciones