Answer:
C) three times slow than on earth
Answer:
Removing some of the books reduced the mass of the box, and less force was needed to push it across the floor.
If the sound comes from the right side, the waves reach the right ear before the left ear. if the sound comes from the left side, the waves reach the left ear before the right ear. The difference between the phases of waves reaching both ears is detected by the ears and then interpreted by the brain
