Two planets of equal mass moving in opposite directions collide and coalesce at a distance d from the Sun. At the time of their elastic collision one planet is at perihelion and the other at aphelion, and both orbits have the same eccentricity e. Find the semi-major axis of the orbit of the joint mass.

“foliation in geology refers to repetitive layering in metamorphic rocks. each layer can be as thin as a sheet of paper, or over a meter in thickness. the word comes from the latin folium, meaning "leaf", and refers to the sheet-like planar structure. “i found this on google i hope it you

You would need to take a picture so i can see

The boat's velocity relative to the riverbank can be resolved into two components. the component going north is 2.7 m/s and the component going west is 1.2 m/s.we add these two vectors and then find the magnitude of the resultant to get the speed.the magnitude of the resultant vector from adding can be obtained by the pythagorean theorem.    to two significant figures, the boat's speed relative to the riverbank is 3.0 m/s.