Physics Final - Exam 2 Questions with
complete solution 2025/2026
The amount of heat necessary to raise the temperature of 1 gram of water by 1 degree water by 1
degree celsius is referred to as the: - correct answer ✔calorie
If 40 kcal of heat is added to 2.0 kg of water, what is the resulting temperature change? - correct
answer ✔20 degree C
Phase changes occur
a. as temp increases
b. as temp decreases
c. as temp remains the same
d. all of above - correct answer ✔c. as temp remains the same
The heat required to change a substance from the solid to the liquid state is referred to as the
a. heat of fusion
b. heat of vaporization
c. heat of melting
d. heat of freezing - correct answer ✔a. heat of fusion
Equal masses of water at 20 degree C and 80 degree C are mixed. What is the final temperature of the
mixture?
a. 40 C
b. 50 C
c. 60 C
, d. 70 C - correct answer ✔b. 50 C
A thermally isolated system is made up of a hot piece of aluminum and a cold piece of copper; the
aluminum and the copper are in thermal contact. The specific heat capacity of aluminum is more than
double that of copper. Which object experiences the greater magnitude gain or loss of heat during the
time the system takes to reach thermal equilibrium?
a. aluminum
b. copper
c. neither; both experience the same size gain or loss of heat
d. it is impossible to tell without knowing the masses - correct answer ✔c. neither; both experience the
same size gain or loss of heat
It is a well known fact that water as a higher specific heat capacity than iron. Now, consider equal
masses of water and iron that are initially in thermal equilibrium. The same amount of heat, 30 calories,
is added to each. Which statement is true?
a. the remain in thermal equilibrium
b. they are no longer in thermal equilibrium; the iron is warmer
c. they are no longer in thermal equilibrium; the water is warmer
d. it is impossible to say without knowing the exact mass involved and the exact specific heat capacities -
correct answer ✔b. they are no longer in thermal equilibrium; the iron is warmer
A chunk of ice (T = -20 deg C) is added to a thermally insulated container of cold water (T=0 deg C). What
happens in the container?
a. ice melts until thermal equilibrium is established
b. The water cools down until thermal equilibrium is established
c. some of the water freezes and the chunk of ice gets larger - correct answer ✔c. some of the water
freezes and the chunk of ice gets larger
complete solution 2025/2026
The amount of heat necessary to raise the temperature of 1 gram of water by 1 degree water by 1
degree celsius is referred to as the: - correct answer ✔calorie
If 40 kcal of heat is added to 2.0 kg of water, what is the resulting temperature change? - correct
answer ✔20 degree C
Phase changes occur
a. as temp increases
b. as temp decreases
c. as temp remains the same
d. all of above - correct answer ✔c. as temp remains the same
The heat required to change a substance from the solid to the liquid state is referred to as the
a. heat of fusion
b. heat of vaporization
c. heat of melting
d. heat of freezing - correct answer ✔a. heat of fusion
Equal masses of water at 20 degree C and 80 degree C are mixed. What is the final temperature of the
mixture?
a. 40 C
b. 50 C
c. 60 C
, d. 70 C - correct answer ✔b. 50 C
A thermally isolated system is made up of a hot piece of aluminum and a cold piece of copper; the
aluminum and the copper are in thermal contact. The specific heat capacity of aluminum is more than
double that of copper. Which object experiences the greater magnitude gain or loss of heat during the
time the system takes to reach thermal equilibrium?
a. aluminum
b. copper
c. neither; both experience the same size gain or loss of heat
d. it is impossible to tell without knowing the masses - correct answer ✔c. neither; both experience the
same size gain or loss of heat
It is a well known fact that water as a higher specific heat capacity than iron. Now, consider equal
masses of water and iron that are initially in thermal equilibrium. The same amount of heat, 30 calories,
is added to each. Which statement is true?
a. the remain in thermal equilibrium
b. they are no longer in thermal equilibrium; the iron is warmer
c. they are no longer in thermal equilibrium; the water is warmer
d. it is impossible to say without knowing the exact mass involved and the exact specific heat capacities -
correct answer ✔b. they are no longer in thermal equilibrium; the iron is warmer
A chunk of ice (T = -20 deg C) is added to a thermally insulated container of cold water (T=0 deg C). What
happens in the container?
a. ice melts until thermal equilibrium is established
b. The water cools down until thermal equilibrium is established
c. some of the water freezes and the chunk of ice gets larger - correct answer ✔c. some of the water
freezes and the chunk of ice gets larger
