Along horizontal straight wire carries a current of 35 a (let’s say, in the positive x-direction). an electron, traveling at 2.2 x 10^7 m/s is 10.0 cm from the wire. what force acts on the electron if its velocity is directed (a) toward the wire, (b) parallel to the wire, (c) perpendicular to the directions defined by (a) and (b)

The metal wire in an incandescent lightbulb glows when the light is switched on and stops glowing when it is switched off. this simple process iswhich kind of a change? a.a physical changeb. a chemical changec. a nuclear changed. an ionic change

Two polarizers are oriented at 24.0∘ to one another. light polarized at a 12.0-degree angle to each polarizer passes through both. what is the transmitted intensity (%)?

Two identical stars with mass m orbit around their center of mass. each orbit is circular and has radius r, so that the two stars are always on opposite sides of the circle. (a) find the gravitational force of one star on the other. (b) find the orbital speed of each star and the period of the orbit. (c) how much energy would be required to separate the two stars to infinity?