Acommon radio wavelength observed coming from astronomical objects is 21 cm. what temperature is associated with this radiation?

How many electrons does silver have to give up in order to achieve a sido noble gas electron configuration

Select the correct text in the passage. which sentences describe examples of sustainable living? i live in an old apartment building downtown, but my company is based in an office park on the outskirts of the city. i drive an old car that needs to be replaced. i plan to buy a hybrid for better gas mileage, but for now i am able to carpool with a couple of friends from work. the drive to the office park is about 45 minutes each way, but we do get to work in a modern building. the architects just received a leed certification for the design.

Particles vibrate in a rigid structure and do not move relative to their neighbors.