Compute the change in mass of the neutron star during the entire process and justify the constant mass assumption made

The softest and hardest minerals are: softest hardest

If two students are running down the hall toward each other, trying to get to class, and they have the same mass and acceleration, what will happen when they collide? will their forces cancel out or will each one experience a reaction?

Matter is needed to transfer thermal energy bya. conductionb. convectionc. radiation d. both a & b.