Obtain a photograph/image of a situation that involves some
type of flowmeter. Print this photo and write a brief paragraph that
describes the situation involved.
This is an open-ended student activity for which student responses will va
Estimate the rate (in gal/hr) that your car uses gasoline when
it is being driven on an interstate highway. Determine how long it
would take to empty a 12-oz soft-drink container at this flowrate.
List all ass
3.75 Water flows steadily through the variable area pipe shown in Fig. P3.75 with negligible
viscous effects. Determine the manometer reading, H, if the flowrate is 0.4 m3 / s and the density
of the manometer fluid is 500 kg / m3 .
Solution V = ui + v j + wk
+ w k
a = + u + v + w i + + u + v + w j +
u v w
= = = 0
t t t
Using software to perform calculus and algebra results in:
(x y ) z
(x + y )
5.29 A water jet leaves a fixed nozzle with a velocity of 10 m/s. The jet diameter is 10 cm. A 30o
cone is pushed into the water jet at a speed of 5 m/s. The water impinges on the cone with the jet
axis and the cone axis in perfect alignment so that the w
A small hole develops in the bottom of the stationary rowboat
shown in Fig. P3.105. Estimate the amount of time it will take
for the boat to sink. List all assumptions and show all calculations.
This is an open-ended student activity for which
A truck carrying chickens is too heavy for a bridge that
it needs to cross. The empty truck is within the weight limits;
with the chickens it is overweight. It is suggested that if one
could get th
Figure P5.46 shows a lateral pipe fitting. This particular fitting has a mainline diameter of 4.0 in.
The diameter of the lateral is 3.0 in., and the lateral angle is 45; 60 F water is f
For any steady flow the streamlines and streaklines are the
same. For most unsteady flows this is not true. However, there are
unsteady flows for which the streamlines and streaklines are the
same. Describe a flow field for which this is true.
Obtain a photograph/image of a flow in which it would not
be appropriate to use the Bernoulli equation. Print this photo and
write a brief paragraph that describes the situation involved.
This is an open-ended student activity for which student resp
Obtain a photograph/image of a situation in which a fluid is
flowing. Print this photo and draw a control volume through which
the fluid flows. Write a brief paragraph that describes how the
3.68 A 50-mm-diameter plastic tube is used to siphon water from the large tank shown in Fig.
P3.68. If the pressure on the outside of the tube is more than 35 kPa greater than the pressure
within the tube, the tube will collapse and siphon will
Calculate the pressure change (p 2 p 1 ) for the jet pump shown in Fig. P5.52. The fluid is 20 C
water. Assume negligible friction at the walls and uniform pressure over each flow area.
Assume that the two streams are fully
From calculus, one obtains the following formula (Leibnitz
rule) for the time derivative of an integral that contains time in both
the integrand and the limits of the integration:
(, ) =
+ (2 , )
(1 , )
When a baseball player catches a ball, the force of the ball on
her glove is as shown as a function of time in Fig. P5.36. Describe
how this situation is similar to the force generated by the deflec