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motikmotik
3 years ago
13

Were you surprised by the “pie data”? Is it true for you, your family, and your friends? Why or why not?

Engineering
2 answers:
Ne4ueva [31]3 years ago
7 0

Answer: i was not suprised because, it is something all people need to know to gai  knowledege about it.

Sergeu [11.5K]3 years ago
6 0

Answer:

No because it is something to gain knowledge of peoples lives.

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3. A 4-m × 5-m × 7-m room is heated by the radiator of a steam-heating system. The steam radiator transfers heat at a rate of 10
Natali [406]

Answer:

14.52 minutes

<u>OR</u>

14 minutes and 31 seconds

Explanation:

Let's first start by mentioning the specific heat of air at constant volume. We consider constant volume and NOT constant pressure because the volume of the room remains constant while pressure may vary.

Specific heat at constant volume at 27°C = 0.718 kJ/kg*K

Initial temperature of room (in kelvin) = 283.15 K

Final temperature (required) of room = 293.15 K

Mass of air in room= volume * density= (4 * 5 * 7) * (1.204 kg/m3) = 168.56kg

Heat required at constant volume: 0.718 * (change in temp) * (mass of air)

Heat required = 0.718 * (293.15 - 283.15) * (168.56) = 1,210.26 kJ

Time taken for temperature rise: heat required / (rate of heat change)

Where rate of heat change = 10000 - 5000 = 5000 kJ/hr

Time taken = 1210.26 / 5000 = 0.24205 hours

Converted to minutes = 0.24205 * 60 = 14.52 minutes

4 0
4 years ago
Calculate the amount of current flowing through a 75-watt light bulb that is connected to a 120-volt circuit in your home.
aev [14]

Answer: 220

Explanation:

7 0
3 years ago
What are the specifications state that all work shall be done?
Elodia [21]

Answer:

The description including its scope is presented throughout the section below.

Explanation:

  • Such operation must be carried out in compliance with all statutes, legislation, building standards, guidelines, and rules relating to that same task, not all of which are restricted to either the U.S Disability Act, the Ecological laws as well as the workplace Safety Act as modified.
  • This same consultant shall appoint and could be completely liable for almost all processes and sequences just for conducting the Job.
4 0
3 years ago
Which excerpt from "The Chrysanthemums' best reveals that Elisa is proud of her
Alisiya [41]
Scissors to avoid any rough edges
4 0
3 years ago
Velocity boundary layer thickness over a intermal fixed horizontal flat plate is the________ distance required for the fluid vel
antoniya [11.8K]

Answer:

Velocity boundary layer thickness over an internal or internal fixed flat plate is  normal to surface distance  required for the fluid velocity to attain the 99% of the free stream velocity value.

Explanation:

The affirmation is the current definition of velocity boundary layer thickness.

4 0
3 years ago
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