An adiabatic process occurs when
A) no thermal energy enters or leaves the system.
B) thermal energy leaving a system is greater than thermal energy entering a system.
C) thermal energy leaving a system is less than thermal energy entering a system.
D) none of these
Answer: A
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The mercury column in an ordinary medical thermometer doubles in length when its temperature changes from 95? F to 105? F. Choose the correct statement:
A. the coefficient of volume expansion of mercury is 0.1 per F? B. the coefficient of volume expansion of mercury is 0.3 per F? C. the coefficient of volume expansion of mercury is (0.1/3) per F? D. the vacuum above the column helps to "pull up" the mercury this large amount E. none of the above is true
A race car moving with a constant speed of 60 m/s completes one lap around a circular track in 50 s. What is the magnitude of the acceleration of the race car?
a. 8.8 m/s2 b. 7.5 m/s2 c. 9.4 m/s2 d. 6.3 m/s2 e. 5.3 m/s2
The highlands on Earth's moon are composed of low-density rock, such as anorthosite
Indicate whether the statement is true or false
Graphical Analysis: A child standing on a bridge throws a rock straight down. The rock leaves the child's hand at time t = 0 s. If we take upward as the positive direction, which of the graphs shown below best represents the velocity of the stone as a function of time?
A. 
B. 
C. 
D. 
E. 