Answer:
Boiling point is the temperature at which a substance changes from liquid → gas. Scientists determine melting or boiling point by heating a small sample of the substance, keeping careful track of the temperature the entire time. When they see a solid melt, they record the temperature as the melting point.
Answer:
I'd assume its B
Explanation:
wind spins the turbines and if there is no wind it could be difficult to spin the turbine.
DATA = distance= 40 metres Time = 20 seconds
EQUATION = speed = distance / time
SUBSTITUTION= ?= 40/20
CALCULATION= 2
UNITS = 2m/s