The gravitational pull created by
causes Earth to revolve around it
Plz help

Research the neutrino using the internet and report your findings. in a nuclear decay, the nucleus of an atom splits apart. larger particles can be detected and their masses and velocities can be recorded. explain how the existence and properties of the neutrino could be predicted using the conservation laws.

In science and physics what is the standard unit of measure for speed?

Give one example to show that when substances are mixed,it may result in a chemical or a physical change depending on the conditions.