21. Where is the heat capacity and the specific heat capacity ( heat capacity per unit mass ) of a gas. 22. Averaged over all stars at x, this acceleration must equal the gravitational restoring force per unit mass F _ x. 23. As the number of hydrogen atoms per unit mass decreases, so too does their energy output provided through nuclear fusion. 24. :: Another reason is that for small particles there is a larger surface area per unit mass than for larger particles. 25. They have an amazing capacitance per unit volume, but not a very high energy per unit volume or per unit mass . 26. Some nanoparticles outperform hydrogen ( per unit volume ) and hydrocarbons ( per unit mass and volume ) in terms of energy storage. 27. Therefore, in ostriches we see use of more energy when compared to smaller birds in absolute terms, but less per unit mass . 28. Where is the specific ( with the sense of " per unit mass " ) thermodynamic work, the internal source term. 29. So the potential can be interpreted as the negative of the work done by the gravitational field moving a unit mass in from infinity. 30. Thus from the target's point of view, colliders can explore collisions with much higher projectile energy and momentum per unit mass .
