Question
In: Physics
A physics professor lives on the top floor of a 4 story apartment building. the apartment...
A physics professor lives on the top floor of a 4 story apartment building. the apartment is 20 meters above the ground level. The professor's bathtub faucet has an area of 10 cm2. The building is fed by a water pipe that has a cross-sectional area of 100cm2. Use g=10m/s2, and the atmospheric pressure is 100000pa. Note that 1L=1000cm3, and the density of the water is 1000kg/m3.
1. the flow rate Q of the tub is 18L per minute. calculate the speed of the water coming out of the faucet.in cm/s. hint: think about units.
2. what is the speed of the water in the main pipe, assuming no other apartments are using water at that time?
A. exactly the same as the speed of the water coming out of the faucet
B.One-tenth of the value of the speed of the water coming out of the faucet
C. ten times the value of the speed of the water coming out of the faucet
3.with the water flowing as describe above, calculate the pressure of the water in the main pipe at ground level(20 meters below the tub faucet), round off if necessary to the nearest pascal.
4. when considering the pressure in the main pipe, which factor is more important, the flow speed or the height of the apartment above the ground level? Or they are equally important?
Solutions
genius_generous answered 2 years agoRelated Solutions
if you're given a number of dead loads on a 4 story building and a floor...
if
you're given a number of dead loads on a 4 story building and a
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say I was given a number of dead loads in psf and I'm supposed
to find the total dead load and the live load.
4. In a two – story building, an exterior column is to be designed for a...
4. In a two – story building, an exterior column is to be
designed for a service dead load of 1000 KN, maximum live load of
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m. If the column dimensions will be restricted to 400 mm x 500 mm,
fc’ = 27.6 MPa, and fy = 414 MPa, calculate the required column
reinforcement
Building type Average floor area (m2) Total floor area (m2) avg story height(cms) COST (HK$) 1...
Building type Average floor area (m2) Total floor area (m2) avg
story height(cms) COST (HK$)
1 1852 81478 410 1467000000
1 1608 64313 411 1150000000
1 1430 55783 403 1028000000
1 1562 57794 390 1100000000
1 1109 37695 391 728000000
1 905 28048 382 558000000
1 1852 81478 410 1467000000
1 901 30617 391 631000000
1 1727 69062 400 1223000000
1 1161 37148 394 761000000
1 1004 37141 400 713000000
1 1216 38912 390 784000000
1 2007 88302 422 1593000000...
Building type Average floor area (m2) Total floor area (m2) avg story height(cms) COST (HK$) 1...
Building type
Average floor area (m2)
Total floor area (m2)
avg story height(cms)
COST (HK$)
1
1852
81478
410
1467000000
1
1608
64313
411
1150000000
1
1430
55783
403
1028000000
1
1562
57794
390
1100000000
1
1109
37695
391
728000000
1
905
28048
382
558000000
1
1852
81478
410
1467000000
1
901
30617
391
631000000
1
1727
69062
400
1223000000
1
1161
37148
394
761000000
1
1004
37141
400
713000000
1
1216
38912
390
784000000
1
2007
88302
422
1593000000...
Building type Average floor area (m2) Total floor area (m2) avg story height(cms) COST (HK$) 1...
Building type
Average floor area (m2)
Total floor area (m2)
avg story height(cms)
COST (HK$)
1
1852
81478
410
1467000000
1
1608
64313
411
1150000000
1
1430
55783
403
1028000000
1
1562
57794
390
1100000000
1
1109
37695
391
728000000
1
905
28048
382
558000000
1
1852
81478
410
1467000000
1
901
30617
391
631000000
1
1727
69062
400
1223000000
1
1161
37148
394
761000000
1
1004
37141
400
713000000
1
1216
38912
390
784000000
1
2007
88302
422
1593000000...
Building type Average floor area (m2) Total floor area (m2) avg story height(cms) COST (HK$) 1...
Building type Average floor area (m2) Total floor area (m2) avg
story height(cms) COST (HK$)
1 1852 81478 410 1467000000
1 1608 64313 411 1150000000
1 1430 55783 403 1028000000
1 1562 57794 390 1100000000
1 1109 37695 391 728000000
1 905 28048 382 558000000
1 1852 81478 410 1467000000
1 901 30617 391 631000000
1 1727 69062 400 1223000000
1 1161 37148 394 761000000
1 1004 37141 400 713000000
1 1216 38912 390 784000000
1 2007 88302 422 1593000000...
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