The mass and gravity of Earth are used as a in comparison with other planets. choose all that apply. standard, weight, measure, distance. NEED ANSWERS ASAP

To do work, this truck uses energy stored in chemical fuel and an electrical battery. how much total energy does this truck put out?

Consider an insulating crystal, made up of layers of atoms. what form would you expect the temperature dependence of the phonon heat capacity to approach at extremely low temperatures if the interlayer coupling is i)very strong (rigid coupling), and ii) very weak. explain.

How does an observation about an object differ from an inference about that object