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
Slav-nsk [51]
2 years ago
9

he ventilating fan of the bathroom of a building has a volume flow rate of 28 L/s and runs continuously. If the density of air i

nside is 1.20 kg/m3, determine the mass of air vented out in one day. The mass of air is kg.
Engineering
1 answer:
stiks02 [169]2 years ago
7 0

Answer:

\Delta m = 2903.04 kg

Explanation:

The mass of vented out in one day is:

\Delta m = \rho_{air}\cdot \dot V \cdot \Delta t\\\Delta m = (1.20 \frac{kg}{m^{3}} )\cdot (28 \frac{L}{s}) \cdot (\frac{1 m^{3}}{1000 L} )\cdot (24 h)\cdot (\frac{3600 s}{1 h} ) \\\Delta m = 2903.04 kg

You might be interested in
A motor driven water pump operates with an inlet pressure of 96 kPa (absolute) and mass flow rate of 120 kg/min. The motor consu
NeX [460]

Answer:

The maximum water pressure at the discharge of the pump (exit) = 496 kPa

Explanation:

The equation expressing the relationship of the power input of a pump can be computed as:

E _{pump,u} = \dfrac{m(P_2-P_1)}{\rho}

where;

m = mass flow rate = 120 kg/min

the pressure at the inlet P_1 = 96 kPa

the pressure at the exit P_2 = ???

the pressure \rho = 1000 kg/m³

∴

0.8 \times 10^{3} \ W = \dfrac{(120 \ kg/min * 1min/60 s)(P_2-96000)}{1000}

0.8 \times 10^{3}\times 1000 = {(120 \ kg/min * 1min/60 s)(P_2-96000)}

800000 = {(120 \ kg/min * 1min/60 s)(P_2-96000)}

\dfrac{800000}{2} = P_2-96000

400000 = P₂ - 96000

400000 +  96000 = P₂

P₂ = 496000 Pa

P₂ = 496 kPa

Thus, the maximum water pressure at the discharge of the pump (exit) = 496 kPa

8 0
2 years ago
In order to protect yourself if you have a dispute with another drivers insurance company you should:
klio [65]

Answer:

  C. Get the names and addresses of witness to the crash

Explanation:

The best approach is to let your insurance company handle the dispute. Since that is not an option here, the best thing you can do is make sure you know who the witnesses are, so your insurance company can call upon them as needed.

8 0
2 years ago
Another focus of effective communication, according to Stephen Covey, is ensuring that:
svetoff [14.1K]

Answer:

Stephen Covey believes this principle is the key to effective interpersonal communication. Seek first to understand, then to be understood. This habit is about communicating with others. It's about developing the habit of listening carefully and really understanding the other person BEFORE giving your thoughts.

Explanation:

4 0
3 years ago
Read 2 more answers
Multiple Choice
ra1l [238]
I need more details to your question
4 0
2 years ago
Read 2 more answers
Controlling your vehicle
Ratling [72]

Answer:

5. D

6. c

7. d

Explanation:

3 0
3 years ago
Other questions:
  • 11 Notează, în caiet, trăsăturile personajelor ce se pot
    13·1 answer
  • Compared to arc welding, which of the following statements are true about<br> gas welding?
    13·1 answer
  • Link AB is to be made of a steel for which the ultimate normal stress is 65 ksi. Determine the cross-sectional area of AB for wh
    14·1 answer
  • when a metal, such as lead, is oxidied (loses electrons) to form a positive ion (cation), how does he solubility change?
    14·1 answer
  • List three reasons for surfacing metals.
    8·2 answers
  • Please choose a specific type of stability or control surface (e.g., a canard) and explain how it is used, what it is used for,
    5·1 answer
  • 8.28 Water is the working fluid in an ideal Rankine cycle with superheat and reheat. Steam enters the first-stage turbine at 140
    13·1 answer
  • As you have learned, not all motor oils are the same. What are two things that make them different?.
    11·1 answer
  • The policeman was questioning the drivers and searching their vehicles. The drivers ____ and their vehicles ____
    14·1 answer
  • Two technicians are discussing relays. Technician A says that relays can fail because the relay winding is open. Technician B sa
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!