Physics with Cal

Multiple Choice Questions
1. Which of the following formulas relating temperatures on the Celsius and Fahrenheit scales is correct?
A. Tc = (5/9)(TF – 32)
B. Tc = (5/9)(TF + 32)
C. Tc = (9/5)(TF – 32)
D. Tc = (9/5)(TF + 32)
2. Of the substances below, the one with the highest specific heat is
A. water.
B. ice.
C. concrete.
D. gold.
3. Of these substances, the one with the lowest specific heat is
A. water.
B. ice. C. concrete.
D. gold.
4. The average pressure of the atmosphere at sea level corresponds to which one or more of the following?
A. 101 Pa
B. 101 kPa
C. 98 kPa
D. 15 lb/in2
E. Both B and D

5. Which of the following formulas expresses the relationship between the pressure and absolute temperature of a gas sample whose volume is fixed?
6. A temperature of 20C is the same as
A. -20.9F.
B. -6.4F.
C. 68F.
D. 94F.
7. Ethanol boils at 172F. The Celsius equivalent of this temperature is
A. 64C.
B. 78C.
C. 140C.
D. 278C.
8. At which of the following Celsius temperatures will a Fahrenheit thermometer show the same reading in degrees?
A. -40C
B. 0C
C. 32C
D. 40C
9. The density of brass is 8  103 kg/m3. The volume occupied by 320 g of brass is A. 0.040 cm3.
B. 4.0 cm3.
C. 40 cm3.
D. 400 cm3.

10. The density of air is 1.3 kg/m3. The air in a room 5 m long, 4 m wide, and 2.5 m high has a mass of
A. 0.26 kg.
B. 6.5 kg.
C. 38 kg.
D. 65 kg.
11. A 400-kg concrete block is 1 m long, 0.6 m wide, and 0.3 m high. Its density is
A. 72 kg/m3. B. 222 kg/m3.
C. 667 kg/m3.
D. 2222 kg/m3.
12. A 400-kg concrete block is 1 m long, 0.6 m wide, and 0.3 m high. It can exert three different pressures on a horizontal surface, depending on which face it rests on. The highest pressure is
A. 0.7 kPa.
B. 2.2 kPa.
C. 13.1 kPa.
D. 21.8 kPa.
13. The pressure on 100 liters of helium is decreased from 1000 kPa to 500 kPa. The new volume of the helium is
A. 25 liters.
B. 50 liters.
C. 200 liters. D. 1600 liters.
14. An absolute temperature of 100 K is the same as a Celsius temperature of
A. -173C.
B. 32C.
C. 212C.
D. 373C.
15. Heat is supplied to a sample of a monatomic ideal gas at 40 °C. It is observed that the gas expands until
its volume and pressure are doubled. What is the final temperature of the gas?
A) 10 °C
B) 20 °C
C) 80 °C
D) 980 °C
E) 1600 °C
16. An ideal gas is contained in a vessel with a moveable piston. Initially, the gas has a volume of 0.024 m3,
an absolute pressure of 1.8 atm, and a temperature of 35.0 °C. The pressure is 0.90 atm when the volume of
the container is decreased to 0.012 m3. What is the final temperature of the gas?
A) 77 K
B) 85 K
C) 170 K
D) 154 K
E) 282 K


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