1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ipatiy [6.2K]
3 years ago
8

Water at a gauge pressure of 3.8 atm at street level flows into an office building at a speed of 0.68 m/s through a pipe 5.4 cm

in diameter. The pipe tapers down to 2.5 cm in diameter by the top floor, 18 m above, where the faucet has been left open. (Figure 1)Calculate the flow velocity in the pipe on the top floor. Assume no branch pipes and ignore viscosity.
v=________

Part b: Calculate the gauge pressure in the pipe on the top floor. Assume no branch pipes and ignore viscosity. Express your answer using two significant figures.
p=________
Physics
1 answer:
Nataliya [291]3 years ago
7 0
kxubj ysufuxtfuvhxub
You might be interested in
State five uses of bases.​
tankabanditka [31]

Answer:

  • Sodium hydroxide is used in the manufacture of soap. It is used in petroleum refining; in making medicines, paper, pulp, etc. It is used in making rayon.
  • Calcium hydroxide is also known as slaked lime. It is used to neutralize acid in water supplies; in the manufacture of bleaching powder; as a dressing material for acid burns; as an antidote for food poisoning.
  • Ammonium hydroxide is used to remove ink spots from clothes and to remove grease from window-panes. It is used in the cosmetic industry.
  • Alkalis are used in alkaline batteries. Generally, potassium hydroxide is used in such batteries.
  • Strontium hydroxide(Sr(OH)2) is used in the food industry for the refining of beet sugar.

7 0
3 years ago
A light ball is dropped straight down off a ledge and hits the ground. A heavy ball is thrown straight down from the ledge, rele
Anettt [7]

Answer:

(d) I and III

Explanation:

Motion of the 1st  light ball

s = gt_1^2/2

s = v_0t_2 + gt_2^2/2

I. Since the heavier starts with an initial velocity v0, and both balls end up traveling the same distance s. From the 2 motion equation above we can conclude that their time must be different

II. Both balls are affected by the same gravitational acceleration g

III. Velocity before the impact of the light ball

v_1^2 = 2gs

And the heavy ball

v_2^2 - v_0^2 = 2gs

Since they have the same acceleration g and distance s. But the heavy ball has an initial push. It would end up with a larger speed.

7 0
3 years ago
How does convection affect our atmosphere? our layers of earth? our oceans?
Xelga [282]

Answer: In convection, there is a transfer of heat due to the bulk movement of molecules within the fluid. It affects our atmosphere, layers of earth and our ocean due to the temperature difference.

Explanation:

Convection is a transfer of heat due to bulk movement of molecules within the fluid.

Convection affects our atmosphere. There is a temperature difference in the atmosphere. Warmer air rises up in compare to the cooler air.

Convection affects our layers of earth. It is limited to troposphere. Due to the high transmission of clear sky to bulk incident energy from sun, troposphere is subjected to convection.

Convection affects our oceans. There will be temperature difference in the ocean water. When the water of ocean heats up then it becomes less dense.

6 0
3 years ago
an electric device is plugged into a 110v wall socket. if the device consumes 500 w of power, what is the resistance of the devi
andreev551 [17]

Answer: R=24.2Ω

Explanation: <u>Power</u> is rate of work being done in an electric circuit. It relates to voltage, current and resistance through the following formulas:

P=V.i

P=R.i²

P=\frac{V^{2}}{R}

The resistance of the system is:

P=\frac{V^{2}}{R}

R=\frac{V^{2}}{P}

R=\frac{110^{2}}{500}

R = 24.2Ω

<u>For the device, resistance is 24.2Ω.</u>

4 0
3 years ago
What is a key difference between transverse and longitudinal waves?
Alinara [238K]
B, is the answer to the question

5 0
3 years ago
Read 2 more answers
Other questions:
  • A person drives an automobile with a mass of 450 kilograms at a velocity of 26 meters per second. The driver accelerates to a ve
    5·1 answer
  • An object moving at a velocity of 32 m/s slows to a stop in 4 seconds. What was its acceleration
    10·1 answer
  • The drawing shows a laser beam shining on a plane mirror that is perpendicular to the floor. The angle of incidence is 33.0°. Th
    7·1 answer
  • Hola <br> que quieren ser amigos? :)
    6·2 answers
  • A 3.0-kilogram object is placed on a frictionless track at point A and released from rest.
    14·1 answer
  • You are planning a bicycle trip for which you want to average 24 km/h. You cover the first half of the trip at an average speed
    7·1 answer
  • AWARDING BRAINLIEST
    11·1 answer
  • PLEASE HURRY!!!
    12·2 answers
  • Plz help plz i'll give brainlist<br> Sorry for the subject btw
    15·2 answers
  • What is the approximate wavelength of a light whose first-order bright band forms a diffraction angle of 45. 0° when it passes t
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!