1. Un automóvil tiene una aceleración muy alta. Partiendo del reposo, su velocidad puede, en promedio, aumentar 7.31 m/s cada segundo, hasta alcanzar el valor de 27.8 m/s, equivalentes a 100
km/h.
a) ¿Cuánto tiempo necesita para alcanzar la velocidad de 100 km/h, partiendo del reposo?
b) Suponiendo que su aceleración es constante, ¿qué distancia recorre en este movimiento
acelerado?
c) ¿Puedes decir, sin hacer ningún cálculo, qué parte de la distancia calculada en b) ha recorrido el
automóvil hasta el momento en que su velocidad era de 50 km/h?

powerful computers now, not then

change tension

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia