Answer:
The human ear is most sensitive to sounds in the range of 2000 to 3000 Hz
Answer:
No, the farmer is not able to move the mule.
Explanation:
Mass =100 kg
Force=F=800 N
The coefficient between the mule and the ground=

Static friction force,f=
Normal force=N=mg
Static friction force,f=
Using 
F<f
Static friction force is greater than applied force.
Therefore , the farmer is not able to move the mule.
Water cycle, evaporation, condensation, and freezing
The ingredients do not react with or chemically bond to each other.
<span>B.Extrinsic motivation </span>