Coal-fired power plants convert chemical energy to kinetic energy to mechanical energy to electrical energy. true false

In a system, when potential energy decreases, then entropy also decreases. true false

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?

It may seem strange that the selected velocity does not depend on either the mass or the charge of the particle. (for example, would the velocity of a neutral particle be selected by passage through this device? ) the explanation of this is that the mass and the charge control the resolution of the device--particles with the wrong velocity will be accelerated away from the straight line and will not pass through the exit slit. if the acceleration depends strongly on the velocity, then particles with just slightly wrong velocities will feel a substantial transverse acceleration and will not exit the selector. because the acc