Answer:
A child ties a rope to a stone and spins it evenly at 7 radians/ second. ( This is the translation in english to your sentence).
The translation you are looking for is:
"The rental apartment is located on the ninth floor."
If you are looking for an answer instead of a translation, please comment on my answer! I'll replay ASAP if that is the case.
1.) como se llaman
2.) como te llamas tu