¿por que la fuerza que se ejerce para correr un mueble de la sala es de contacto y no de campo?

Asmall aircraft, on a heading of 225°, is cruising at 150 km/h. it is encountering a wind blowing from a bearing of 315° at 35 km/h. determine the aircraft’s ground velocity.

Three resistance 4,4 and 6 ohms are joined in the series.the total resistance will be

Asimple electrochemical cell contains two electrodes.