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Which of the following statements are true? I. The blood velocity and pressure are higher in arteries than in capillaries. II. Blood vessels do NOT follow Bernoulli’s principle if viscosity of blood is taken into account. III. For an incompressible…
Which of the following statements accurately orders the speed of sound through the following mediums: air (ρair = 1.275 kg/m3), water (ρwater = 1000 kg/m3), and copper (ρcopper = 8960 kg/m3)? A. Air > water > copper B. Air >…
A baseball that lands in a lake (water) experiences a buoyant force of approximately 2N while submerged. A baseball’s mass is specified as 142-149g, or 5-5¼ oz., according to the official rules of baseball. What is the specific gravity of…
Carbon dioxide at -20°C is pressurized at 100 atm. If the CO2 undergoes isobaric cooling to -65°C followed by isothermal depressurization to 1 atm, what are the original phase and subsequent phase(s) of the CO2? A. liquid, gas, solid B.…
A punk-rocker walks by a listener with a portable stereo playing music at full volume. The pitch of the recording will seem lower: I. as the punk-rocker moves away from the listener. II. as the listener moves away from the…
At atmospheric pressure, carbon dioxide undergoes sublimation at -109.5°F. How does the entropy change when CO2 undergoes deposition? A. ΔS>0 B. ΔS<0 C. ΔS=0 D. cannot be determined Click for Explanation Deposition is a phase change from gas directly to…
An object rests on a plane, with an angle of incline, θ, an acceleration due to gravity, g, and a coefficient of friction μ between the object and the plane. Which of the following gives the acceleration of the object?…
In an experiment, a student is releasing a block from the top of several distinct inclined planes and allowing it to slide to the bottom. Assume that the tracks are frictionless and that all inclines have equal heights. The speed…
Two model trains are propelled along a straight, frictionless track by electric motors. Train X has a total mass of 100g and is moving at speed v. Train Y has a total mass of 10g and is moving at speed…
The flow of blood through the aorta can be approximated with the volumetric flow rate equation. When the smooth muscle of the aorta contracts, the radius can decrease by as much as 10%. If the blood flow is to remain…