Acurrent of 72.4 ma exists in a metal wire. (a) how many electrons flow past a given cross section of the wire in 10.5 min? electrons (b) in what direction do the electrons travel with respect to the current? the magnitude is zero. opposite direction same direction

What is the power rating of the lightbulb if 3.0 a flow through it when connected to a 15 v battery

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

Awave has a wavelength of 7 mm and a frequency of 19 hertz. what is its speed?