We are warmed on a hot moist day because water molecules in the air striking our bodies
A) transfer some of their kinetic energies to us.
B) gain kinetic energy as they change state.
C) form an insulating layer on our bodies.
Question 2
A level pipe contains a nonviscous, incompressible fluid with a density 1200 kg/m3 that is flowing steadily. At one position within the pipe, the pressure is 300 kPa and the speed of the flow is 20.0 m/s.
At another position, the pressure is 200 kPa. What is the speed of the flow at this second position? A) 567 m/s
B) 16.2 m/s
C) 32.9 m/s
D) 23.8 m/s
E) 186 m/s
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