Spiral galaxies are still undergoing star formation
"Ocean surface currents are beautifully depicted in the drawing that accompanies this question."
Density = mass/volume
Density = 40g/20cm^3
Density = 2g/cm^3
this has something to do with black body radiation and absorption
Answer:
In a collision, the velocity change is always computed by subtracting the initial velocity value from the final velocity value. If an object is moving in one direction before a collision and rebounds or somehow changes direction, then its velocity after the collision has the opposite direction as before.
Explanation:
