Una sfera conduttrice di raggio R=3,7 m ha una densità superficiale di carica pari a 5,7 uC/m?. Calcola l'intensità del campo elettrico:
a) in un punto distante R/2 dal centro
b) in un punto distante 2R dal centro

Aform of energy that is reflected or emitted from objects in the form of electrical and magnetic waves that can travel through space. there are many forms of  electromagnetic  energy including gamma rays, x rays, ultraviolet radiation, visible light, infrared radiation, microwaves and radio waves.

Ireally don’t know

The statement that best describes the object on the right is a bar magnet with its north pole on the left.