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 temperature change during the time the system takes to reach thermal equilibrium?
A)
the copper
B)
the aluminum
C)
neither; both experience the same size temperature change
D)
it is impossible to tell without knowing the masses
E)
it is impossible to tell without knowing the volumes
Question 2
An object is moving with constant velocity in a straight line. Which of the following statements is true?
A)
A constant force is being applied in the direction of motion.
B)
A constant force is being applied in the direction opposite of motion.
C)
There are no forces acting on the object.
D)
The net force on the object is zero.
E)
There is no frictional force acting on the object.
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