The freezing point of water is the same as its a. melting point. b. boiling point. c. sublimation point. d. evaporation point.
2 answers:
Answer: melting point.
Explanation:
Freezing point is the temperature at which liquid phase changes to solid phase. Freezing point of water is .
Melting point is the temperature at which solid phase changes to liquid phase. Melting point of water is .
Melting and freezing are reversible processes which takes place at for water.
Boiling point is the temperature at which vapor pressure of the liquid becomes equal to atmospheric pressure.
Sublimation point is the temperature at which gaseous phase changes to solid phase.
Thus the freezing point of water is the same as its melting point.
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Answer:
f.The period is independent of the suspended mass.
Explanation:
The period of a pendulum is given by
where
L is the length of the pendulum
g is the acceleration due to gravity
From the formula, we see that:
1) the period of the pendulum depends only on its length, L, and it is proportional to the square root of the length
2) the period does not depend neither on the mass of the pendulum, nor on its amplitude of oscillation
So, the only correct statements are
f.The period is independent of the suspended mass.
Note: statement "e.The period is proportional to the length of the wire" is also wrong, because the period is NOT proportional to the length of the wire, but it is proportional to the square root of it.