Ac generator provides emf to a resistive load in a remote factory over a two-cable transmission line. at the factory a step-down transformer reduces the voltage from its transmission-line value to a much lower value that is safe and convenient for use in the factory. the transmission line resistance is 0.3 w per cable, and the power of the generator is 250,000 w (rms).1 if (rms), what are

(a) the voltage drop dv across the transmission line,
(b) the rate at which energy is dissipated in the line as thermal energy?
(c) if instead were 8000 v (rms), what would be the voltage drop and power dissipated in the transmission line?
(d) repeat part c for (rms)

a small object of mass 3.66 g and charge -17.6 µc is suspended motionless above the ground when immersed in a uniform electric field perpendicular to the ground. what are the magnitude and direction of the electric field?

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me

you can cut your hand off if your not