Abeam of electrons is accelerated through a potential difference of 10 kv before entering a velocity selector. if the b-field of the velocity selector is perpendicular to the velocity and has a value of 0.03 t, what value of the e-field is required (in the magnetic field region) if the particles are to be undeflected

However, had it been a real sound, the sound's pitch would have been increased by the doppler effect, since the falcon was moving the source of the sound. perpendicular to away from towards at the same speed as

You are the coordinator for a program that is going to take place at night in a rectangular amphitheater in the mountains. you will have no access to any electricity, but you must be able to illuminate the entire grounds. you know the intensity of the light from a lantern varies inversely as the square of the distance from the lantern. suppose the intensity is 90 when the distance is 5 m. a. write an equation to model the situation. b. solve for the constant of variation. c. write the equation to model the situation using the constant () of variation. d. you have been given lanterns with 40 light intensity. use your equation to solve for the distance from the lantern. e. you need to illuminate 225 km. how many meters do you need to light? f. how many lanterns will you need?

Is the portion of the electromagnetic spectrum that has a frequency just above that of visible light.