Q: Q: What kind of equal and opposite forces cancel one another out when they act on the same object?   A: | OPTIONS:
- solid
- exact
- combined
- balanced
A: balanced

Q: Q: Which part of an earthquake is in the ground where the ground breaks?   A: | OPTIONS:
- the epicenter
- the tectonic plate
- the fault
- the focus
A: the focus

Q: Q: The pion can only be created by violating the conservation of what?   A: | OPTIONS:
- quantum physics
- time-space
- momentum
- mass-energy
A: mass-energy

Q: Q: What is the term for the affected factor in an experiment?   A: | OPTIONS:
- multiple variable
- stable variable
- independent variable
- dependent variable

A: dependent variable