Question

When depth is constant in Bernoulli’s Equation (Bernoulli’s Principle), which term is not present in the equation? a. Pressure b. Density c. Velocity d. Gravity

Answer #1

Bernoulli’s Equation is a equation that shows conservation of energy when a fluid is in motion.

So density is always present in Bernoulli’s Equation..

within a horizontal water pipe that changes diameter, regions where the water is moving fast will be under less pressure than regions where the water is moving slow.

So, both pressures and velocity is also again present, only 'gravity' is absent.

Use Bernoulli’s equation to estimate the pressure drop that
occurs between the arteries and small arteries for an initial blood
flow velocity of 3 ft/s. Assume a constant vessel height. How does
this value compare to physiological pressure drops?

Question 1
The pressure in a liquid is:
A)
independent of the depth
B)
linearly proportional to the depth
C)
proportional to the 3rd power of depth
D)
inversely proportional to the depth
E)
proportional to the 2nd power of depth
Question 2
The reason for floating of some objects in water is due to:
A)
First law of thermodynamics.
B)
Archimedes’ principle.
C)
Hydrogen bond.
D)
Einstein Energy principle.
E)
Earth magnetic poles.
Question 3
The reason for...

For each case below, list the assumptions that are applicable.
Indicate which of (a) continuity equation, (b) Euler’s equation,
(c) Bernoulli’s equation, (d) energy equation, (e) isentropic
relations, and/or (f) equation of state would be most appropriate
to use to find the discharge velocity (more than one may apply).
Defend your choice(s) by explaining how each equation fits the
assumptions stated and how each would be used to solve the problem.
Only include the information requested—do not attempt to solve...

3.) What is the most accurate statement concerning the spring
constant (k)?
A. The
spring constant is the ratio of the displacement of the spring from
its equilibrium position divided by the force applied to the
spring
B. When the
displacement of the spring from its equilibrium position is plotted
(y-axis) against the force applied to the spring that
caused
C. Spring constant is a unitless number related to the “stiffness”
or strength of the spring.
...

Answer the following questions:
a. A constant density liquid is flowing through
a pipe when the cross-sectional area of the pipe is reduced
suddenly. Derive an equation for the change in pressure in terms of
the velocity, cross-sectional area, and density.
What percentage of a wooden plank’s weight will be supported by
the buoyant force when submerged in oil?
Use any denisty but explain

A bubble of 6.00 mol helium is submerged at a certain depth in
liquid water when the water ( and thus the helium ) undergoes a
temperature increase T of 20 C at constant pressure. As a result,
the bubble expands. (a) How much heat Q is added to the helium
during the expansion and temperature increase? (b) What is the
change Eint in the internal energy of the helium during the
temperature increase? (c) How much work W is...

A cylindrical tank of radius R is filled with a liquid of
density to a height H above its bottom. It has a small hole of
radius r in the mantle at distance h above its bottom. Air pressure
equals p0. You are to use Bernoulli’s equation to compute the flow
velocity of the fluid as it exits the hole. a) Prepare a diagram.
Indicate the location of the two points that you choose when
applying Bernoulli’s equation. What...

Transport Phenomena/Mass Momentum Heat transfer problem
An incompressible, Newtonian fluid inside a tube flows downward
due to gravity. The tube is oriented vertically, and moves upward
with a constant velocity, V. There is no pressure gradient.
a). Identify an appropriate coordinate system to find the
velocity profile in the tube.
b) Make assumptions and postulate the 3 velocity components for
this problem.
c) Write down a component of the Navier-Stokes equation to find
the velocity profile. SImplify to obtain a...

1. The equilibrium constant for the chemical equation is Kp =
21.8 at 179 °C. Calculate the value of the Kc for the reaction at
179 °C.
2. At a certain temperature, the Kp for the decomposition of H2S
is 0.822. H2S(g)--->H2(g)+S(g)
Initially, only H2S is present at a pressure of 0.120 atm in a
closed container. What is the total pressure in the container at
equilibrium?

A lake has a light attenuation constant of -0.0798/m (we want to
figure out the depth at which 60% of the light is attenuated (where
40% of the initial intensity still remains).
a) What is this depth in meters?
b) How does this depth compare to what you would expect to find in
the Chesapeake Bay?
c) Would the attenuation coefficient absolute value (remember
absolute value ignores positive or negative) go up or down if it
were measured in the...

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