Use that describes force between static electrically charged particles. In its scalar form the law is: ##F=k_e|q_1q_2|/ r^2## ##F=8.9910^9 Nm^2 C^-2|(-1C)(-2C)|/( 4^2 m^2) = 1.1210^9N## That […]
A capacitor is charged to potential difference of 12V. It delivers 40% of its stored to lamp.The final potential difference across capacitor is 9.295volts. Initially: We […]
You can search this speed…. ##n=C/V## ##N##=Refraction Indice ##C##= Speed of light ##V##=Speed in the diferente mean Are you agree to me that ##n=c/v## is equals […]