We can reasonably model a 75 W incandescent lightbulb as a sphere 7.0 cm in diameter. Typically, only about 5.0 % of the energy goes to visible light; the rest goes largely to nonvisible infrared radiation. Required:
a. What is the visible light intensity (in W/m^2) at the surface of the bulb?
b. What are the amplitudes of the electric and magnetic fields at this surface, for a sinusoidal wave with this intensity?

igneous rocks also form where plates converge. the subducting plate melts as it sinks into the crust of the earth, and the melt rises into the overriding plate forming volcanoes. metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. -woods

force required to detach it is given by

charges are taken to be fundamental charge

now we have

so above is the minimum distance at which it will detach

well clustered together.

points close on a scatter diagram