# Physics

posted by .

The main water line enters a house on the first floor. The line has a gauge pressure of 1.70 105 Pa.
(a) A faucet on the second floor, 6.5 m above the first floor, is turned off. What is the gauge pressure at this faucet?
(b) How high could a faucet be before no water would flow from it, even if the faucet were open?

• Physics -

(a) Subtract (density)*g*h
from the pressure in the floor below.
h = 6.5 m
density = 1000 kg/m^2
g = 9.8 m/s^2

(b) The pressure at a height H above the first floor is
1.70*10^5 N/m^2 - (density)*g*H

Set (density)*g*H = 1.70*10^5 N/m^2
and solve for H

## Similar Questions

A water pipe having a 2.1 cm inside diameter carries water into the basement of a house at a speed of 0.88 m/s and a pressure of 169 kPa. The pipe tapers to 1.0 cm and rises to the second floor 7.1 m above the input point. (a) What …
2. ### general physics

Determine the minimum gauge pressure needed in the water pipe leading into a building if water is to come out of a faucet on the twelfth floor, 38 m above that pipe.
3. ### math word problem

The Main Hall on the college campus has four main levels, from the basement up to the third floor. The technology staff in the basement occasionally needs to see the President, who is on the first floor, and the Dean who is on the …

what is the minimum gauge pressure needed in the water pipe leading to a building if the water is to come out of a faucet on the 12th floor, 41m. above the pipe.
5. ### physics

Water is circulating through a closed system of pipes in a two- floor apartment. On the first floor, the water has a gauge pressure of 3.4*10^5 Pa and a speed of 2.1 m/s. However, on the second floor, which is 4.0 m higher, the speed …
6. ### Physics

Determine the minimum gauge pressure needed in the water pipe leading into a building if water is to come out of a faucet on the twelfth floor, 40m above that pipe. Pa?
7. ### physics

A worker has to move a rock with mass 50 kg on a stairway from the first floor to the second floor of a house. The second floor is 4.6 m above the first floor and the stairway has 18 steps. The rock is lifted from step to step. How …
8. ### physics

Practice Problem 13.9 Let's begin by looking at a flow problem in which the diameter of a pipe changes along the flow path. We will need to use both the continuity equation and Bernoulli's equation for this problem. Water enters a …
9. ### math

A 40 foot long escalator rises from the first floor to the second of a shopping mall. The escalator makes a 30 degree angle with the horizontal. How high above the first floor is the second floor?
10. ### Math

A man standing on a window of the first floor of a building observed that the angle of depression of forest in which is 10 metre from the photo of the building is 45° claims to the window of the second floor directory above the first …

More Similar Questions