Physical Science

Chapter 6: Thermal Energy

Solve a Simple Equation

1.
Find the change in thermal energy of a 20-kg wooden chair that warms from 15º to 30º if the specific heat of wood is 700 J/(kgº).
A)140,000 J
B)210,000 J
C)490,000 J
D)1,090,800 J
2.
Find the change in thermal energy of a 20-kg wooden chair that warms from 20º to 55º if the specific heat of wood is 700 J/(kgº).
A)140,000 J
B)210,000 J
C)490,000 J
D)1,090,800 J
3.
Find the change in thermal energy of a 20-kg wooden chair that warms from 15º to 20º if the specific heat of wood is 700 J/(kgº).
A)28,000 J
B)210,000 J
C)140,000 J
D)490,000 J
4.
Find the change in thermal energy of a 20-kg wooden chair that warms from 25º to 35º if the specific heat of wood is 700 J/(kgº).
A)140,000 J
B)210,000 J
C)363,600 J
D)490,000 J
5.
Find the change in thermal energy of a 20-kg wooden chair that warms from 30º to 45º if the specific heat of wood is 700 J/(kgº).
A)140,000 J
B)210,000 J
C)490,000 J
D)1,090,800 J
6.
The air in a living room has a mass of 72 kg and a specific heat of 1010 J/(kgº). What is the change in thermal energy of the air when it warms from 15º to 30º?
A)140,000 J
B)210,000 J
C)490,000 J
D)1,090,800 J
7.
The air in a living room has a mass of 72 kg and a specific heat of 1010 J/(kgº). What is the change in thermal energy of the air when it warms from 20º to 55º?
A)210,000 J
B)490,000 J
C)1,090,800 J
D)2,545,200 J
8.
The air in a living room has a mass of 72 kg and a specific heat of 1010 J/(kgº). What is the change in thermal energy of the air when it warms from 15º to 20º?
A)140,000 J
B)210,000 J
C)363,600 J
D)1,090,800 J
9.
The air in a living room has a mass of 72 kg and a specific heat of 1010 J/(kgº). What is the change in thermal energy of the air when it warms from 25º to 35º?
A)140,000 J
B)210,000 J
C)363,600 J
D)727,200 J
10.
The air in a living room has a mass of 72 kg and a specific heat of 1010 J/(kgº). What is the change in thermal energy of the air when it warms from 30º to 45º?
A)1,090,800 J
B)490,000 J
C)210,000 J
D)140,000 J
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