If you do an experiment on earth, and then do an identical ...

[silviawilliams41]

If you do an experiment on earth, and then do an identical experiment in a jet plane moving uniformly at a high speed, you get identical results from both experiments. This is an example of __________.
 Fill in the blank(s) with correct word

Question 2

The mass of an electron and its antiparticle, a positron, is 0.511 MeV/c2 . In order to produce an electron-positron pair, a gamma ray must have an energy larger than 1.022 MeV because __________.
 Fill in the blank(s) with correct word

[cuttiesgirl16]

Answer to Question 1

the principle of relativity

Answer to Question 2

of the equivalence of mass and energy

[silviawilliams41]

Thank you!

[cuttiesgirl16]

Always glad to help...