What is the separation at which an object in an elliptical orbit has its average speed, relative to the primary object?

Find a general expression for the separation between two gravitationally bound masses, in elliptical orbits around a common center of mass, when they have their average speed relative to each other. (Hint: it isn't the length of the semimajor axis.)

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

Avehicle has an oil leak that is causing the entire oil pan to be wet, but inspection reveals no exact source after cleaning off the oil residue. technician a says to install a fluorescent dye in the crankcase and operate the engine, then re-inspect for leaks with a special light (black light). technician b says the oil leak may be coming from a source at the top of the engine, such as a valve cover gasket. who is correct?

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine