Ametallic sphere of radius 2 cm is positively charged with 5 μc of charge, which spreads on the surface of the sphere uniformly. the metallic sphere stands on an insulated stand and is surrounded by a larger metallic spherical shell, of inner radius 5 cm and outer radius 6 cm. now, a negative charge of 5 μc is placed on the spherical shell, which spreads out uniformly on the inner surface of the shell. answer below questions. let v ( r → [infinity] ) = 0 .

Aspacecraft that renters the earth’s atmosphere drastically slows down. the amount of kinetic energy the spacecraft has as it reenters the earths atmosphere

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?

Definition: this is the weighted average of all of the isotopes of an element.