Motor oil, with a viscosity of 0.250 N • s/m2, is flowing through a tube that has a radius of 5.00 mm and is 25.0 cm long. The drop in pressure is 300 kPa. What is the volume of oil flowing through the tube per second?
A) 0.000376 m3/s
B) 0.0253 m3/s
C) 0.00118 m3/s
D) 4.71 m3/s
E) 7.54 m3/s
C
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Answer the following statement true (T) or false (F)
Suppose that an object’s entropy increases from zero when its thermal energy is U = 0 to some maximum value when U = 
Umax, and then goes back to zero when U = Umax (as shown in the drawing below). The greatest thermal energy U that such an object could have when in thermal equilibrium with a normal object is closest to which of the following?
A. 0
B. 
Umax
C. 
Umax
D. 
Umax
E. Umax
F. Other (specify)
About how hot does something have to get to glow red hot?
a. 375 degrees F b. 800 degrees F c. 3000 K d. 6000 K
When energy flows as heat from a hotter object to a colder one:
a. the kinetic energy of microscopic particle motions in the hotter object decreases. b. the kinetic energy of microscopic particle motions in the hotter object increases. c. only thermal energy changes in each object; kinetic energy remains the same. d. it does work on the colder object. e. the kinetic energy of microscopic particle motions in both objects increases.