College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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How did that person get the answer where the red dot is(101.87)?
Transcribed Image Text:3:34 E
N{ 4 l 93%i
2) Or each port in tapie 3 can be compieted as ;
calculated
Measured
Calculated
Percent
Table
pressure
velocity
(m/s)
Pressure
3
differer
(Кра)
(Кра)
Flow rate
1 =
0.0010136
m3 /s.
port
1
23.2
101.874
port
5.18
102.263
102.18
0.08
2
port
23.2
101.908
101.87
0.03
3
port
4
5.18
102.090
102.18
0.08
Flow rate
2 =
0.0011623
m3/s.
port
1
26.6
101.933
port
5.94
102.428
102.34
0.08
2
port
3
26.6
101.968
101.933
0.03
port
5.94
102.223
102.34
0.1
II
Transcribed Image Text:3:34
NI 1 93%i
related by
1
P2 +
2
That gives ;
1
P2 = P1 + ,p (vỉ – v3)
.(4)
So for given each flow rate, calculate velocity of air with
equation (1).
After finding velocities of two adjacent ports ( say port 1
and 2 or port 2 and 3 ), caluclate the pressure at one
port, with value of pressure in another using equation
(4) ;
Take P1 Pressure value given as measured value already
given in table. Then using formula (4) and velocity
terms already calculated ( with help of given flow rate
and area ), calculate pressure at port 2, P2.
Percentage difference between measured and
calculated value can be calculated as;
Pmegsured - PCALCULATED
% DIFFERENCE =
x 100
Pmeasured
Using formula (4) and above calculated areas ( in table
2) of each port in table 3 can be completed as ;
calculated
Measured
Calculated
Percent
Table
pressure
velocity
(m/s)
Pressure
3
differer
(Кра)
(Кра)
Flow rate
1 =
0.0010136
m3 /s.
port
23.2
101.874
II
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