a conductor wire has a length of 4.10 elevated to -1 m and the cross-sectional area 8.10 raised to -6 square meters. knowing that the material that makes up the wire has an electrical resistivity of 6.10 to -6 Ohm, the electrical resistance value of this conductor in ohms is

it is the physics that explains how everything works. The best description we have of the. nature of the particles that make up matters and the forces with which they interact. It underlines how atoms work, and so why chemistry and biology work as they do

show the wavelengths of a wave. show the crests of a wave.

compass can be used day and night, cloudy or sunny