What is the exit cone, and what are its values at the event horizon and at the photon sphere? Explain the relationship between the size of the exit cone and the distance from the black hole.

Idon’t understand your question, can you clear it up?

False is the answer    hope to soon

Some connecting rods have to lubricate the cylinder wall or piston pin. the answer is letter d. graphite coating can be a major  additive to many  coating  systems and things such as connecting rods.  it functions as a refractory, lubricant, thermal conductor, and electrical conductor for a machine or thing to enhance its work.