ASTR 101 Lecture 47: density and mass practice problems

according to the uncertainty principle, which of the following statements is true?

a) It is impossible to simultaneously determine both the position and the momentum of a particle with arbitrary accuracy.

b) It is impossible to simultaneously determine both the energy and the momentum of a particle with arbitrary accuracy.

c) It is impossible to measure the position of a particle with arbitrary accuracy in a finite amount of time.

d) It is impossible to simultaneously measure both the energy and position of a particle with arbitrary accuracy.

e) It is impossible to determine a particle's energy with arbitrary accuracy in a finite amount of time.

The jovian moon with the most geologically active surface is

The graph shows that galaxies with high speeds as measured from earth are __________.