There is an almost isotropic radiation coming to earth from outer space from all direction, the so-called background radiation. this radiation corresponds to a temperature of 3 k. to which wavelength should we tune our antenna in order to detect this radiation? a. 966 mmb. 8.69 mmc. 8.69 μmd. 966 μm

Alightning strike consists of charge moving from a cloud to the ground . in one particular case, the electrons in a lightning strike are confined to travel within a radius of 1.5 m and to move at a speed of 5.0 x 10 m/s. if the density of electrons in the strike is 10'15 electrons/m what current is carried by the lightning ?

Atelevision set that has been running for a while heats up even the air around it. which two laws of thermodynamics could be used to analyze this scenario

What is the temperature in degrees celsius of a substance with a tempature of 49k