4.Două corpuri punctiforme sunt electrizare cu sarcinile Q 1 =3,2 *10 -9 C, respectiv Q 2 = -1,6 * 10 -10 C. a)Câți electroni sunt pe fiecare corp?

b) care este sarcina electrică de pe fiecare corp după contactul dintre cele două corpuri?

Va rog frumos, dau coroana

Which statement about covalent bonds is true

Glass is transparent to visibile light under normal conditions; however, at extremely high intensities, glass will absorb most of the light incident upon it. this works through a process known as multiphoton absorption. in this process, several photons are absorbed at the same time. if very intense light whose photons carry 2ev of energy is shined onto a material with a band gap of 4ev, that light can be absorbed through two-photon absorption, because two photons have the right amount of energy to bridge the band gap. what is the minimum number of photons of 800-nm light that are needed to equal or exceed the band gap of fused silica glass

An electric current is flowing through the cord below. what will happen to this current if a magnet is brought near the cord? a. the electric current will stop flowing. b. it will exert a force on the voltage. c. the resistance of the wire will decrease. d. it will exert a force on the electric current.