1. As a fluid moves through a tube with changing diameter, which of the followin
ID: 2304885 • Letter: 1
Question
1. As a fluid moves through a tube with changing diameter, which of the following is constant at different parts of the tube during a given period of time?
a.
The density of the fluid
Bernoulli’s equation is a statement of what general physics principle (applied to moving fluids)?
Newton’s 2nd Law of rotation
3. Two balloons are tied and hang with their nearest edges about 3cm apart. If you blow between the balloons (not at the balloons, but at the opening between them), what happens? Why?
4. As water in a level pipe passes from a narrow cross section of pipe to a wider cross section, how does the pressure against the wall change?
The amount of mass that flows through each section.Explanation / Answer
Q1. (d) The density of fluid does not change as its an intrinsic property.
Q2. (b) Conservation of energy
Q3.(c)The force from your breath pushes out the air between the balloons, creating a low-pressure area that pulls the balloons together.
Q4.(b) Decreases this is the consequence of Bernoulli’s equation.
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