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School
Chaffey College *
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Course
349
Subject
Mechanical Engineering
Date
Nov 24, 2024
Type
png
Pages
1
Uploaded by AmbassadorThunderEagle5
4.
Activity
#3
e)
Reset
the
system.
Add
200
light
molecules.
Set
the
Constant
Parameter
button
to
Pressure.
Record
the
temperature
and
volume
of
the
system.
Temperature:
300
K
Volume
(lenght
A):
10.0
nmA
f)
Add
heat
(100
K)
to
the
system
using
the
Heat
Control.
What
happens
to
the
volume
of
the
gas
container?
The
volume
expands
and
increases
g)
Notice
the
way
the
vertical
lid
moves
to
maintain
the
same
pressure.
Record
the
temperature
and
volume
of
the
system.
Temperature:
450
K
Volume:
15
nmA
What
happens
to
the
temperature
and
volume?
Increases
in
both
temperature
and
volume
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and these questions
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please help me with this
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Please help and show work.
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Direction: Graph the heating curve of ethanol using the information given. Check off each item as you add additional information to your graph so that none is missed.
Background information of Ethanol:
Boiling Point = 78 0C
Melting Point = -114 0C
Starting Temperature = -120 0C
After two minutes, frozen cold ethanol starts to melt. It takes two minutes to melt completely.
After eight more minutes, it begins to boil. It boils for six minutes.
Heat is added for two more minutes until ethanol reaches 80 0C.
Label “melting” where this takes place.
Label “vaporization” where this takes place.
Label “phase change” where a phase change occurs.
Indicate where ethanol is only a SOLID, only a LIQUID, and only a GAS.
Of the three phases, label which phase has: weakest IMF, strongest IMF, and medium IMF.
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Not Ai generated please show all steps
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Problem 3:
Insulation
To=1
Toowwww
Steam
Tx2
T₂ T3
www www
R₁ R₁ R₂
www.T
R₂
Steam at T1 = 320 °C flows in a cast iron pipe (k= 80 W/m. °C) whose inner and outer diameters are
5 cm = 0.05 m and D₂ = 5.5 cm = 0.055 m, respectively. The pipe is covered with 3-cm-thick glass wool
insulation with k = 0.05 W/m. °C. Heat is lost to surroundings at T2 = 5 °C by natural convection and
radiation, with a combined heat transfer coefficient of h₂ = 18 W/m². °C. Taking the heat transfer coefficient
inside the pipe to be h₁ = 60 W/m². °C, determine the temperature drops across the pipe and the insulation.
The determination is based on a unit length of the pipe (L = 1 m).
Assumptions
1. Heat transfer is one-dimensional since there is no indication of any change with time.
2.
Heat transfer is one-dimensional since there is thermal symmetry about the centreline and no
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3. Thermal conductivities are constant.
4. The thermal contact resistant at the interface is…
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Newton's Law of cooling states that the rate at which heat is lost by a heated body is
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medium. Match the following statements/phrases with the corresponding item in the
drop down box. Choices in the box
1. In accordance with the stated law obove, we have the equation?
2. If a thermometer is taken outdoors where the temperoture is 5 deg C, from a
room in which the temperature is 20 deg C and the reading drops 10 deg C in one
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4. In the obove problem, how long, in minutes, after its removal from the room will
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5.2
dT(body temp)/dt = k(Temp of medium - 5)
dr(body temp)/dt = k(Temp of body - Temp of medium)
Temp of body = Cenkt +5
2.5
13.7
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-50-
No elements selected
A (-20,-40)
-40-
-30-
R=64
(5,0)
,ksi
-50
-40
-30
-20
-10
10
20
30
40
50
10
20-
30-
40-
50+t, ksi
20 ksi
Press TAB to navigate between elements on the canvas. Press ALT+M to get to the main menu. Press ALT+A to modify the attributes.
Press (ALT+Q) to quit the application.
30 ksi
Submit
Previous Answers Request Answer
40 ksi
X Incorrect; Try Again; 2 attempts remaining
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please read everything properly... Take 3 4 5 hrs but solve full accurate drawing on bond paper don't use chat gpt etc okk
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hints:
The flask will be filled with water (at a constant rate of 500 gallons per minute).
It will take me exactly 10 minutes to escape from the chains.
The diameter of the tank at 1 foot intervals.
I am 5 feet 9 inches tall, and I'm pretty skinny so that you can ignore both my volume and the volume of the stool in your analysis.
A gallon is equal to 0.13368 cubic feet.
You can think of the volume and the height of the water as functions of time. You can easily find an expression for V (t), and then use your expression for volume in terms of height to solve for h(t).
after 10 minutes amount of water in the tank=66.84 ft3
t=69.3 minutes
h(t)=e66.84t/100pi -1
h(10)=e66.84(10)/100pi -1=7.39 ft
Height of stool=1.64 ft
Height of water in the tank=7.39 ft
Questions: show work
How fast is the water rising?
I would like to know how long I will have to hold my breath during the last part of the stunt.
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PLEASE SHOW THE COMPLETE SOLUTION AND EXAMINATION. THANK YOUUUU.
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Please show work in a handwritten format.
Don't use chatgpt.
Mechanics of materials/design.
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Problem 3:
Insulation
To=1
Toowwww
Steam
Tx2
T₂ T3
www www
R₁ R₁ R₂
www.T
R₂
Steam at Tx1 = 320 °C flows in a cast iron pipe (k = 80 W/m. °C) whose inner and outer diameters are
5 cm = 0.05 m and D₂ = 5.5 cm = 0.055 m, respectively. The pipe is covered with 3-cm-thick glass wool
insulation with k = 0.05 W/m. °C. Heat is lost to surroundings at T2 = 5 °C by natural convection and
radiation, with a combined heat transfer coefficient of h₂ = 18 W/m². °C. Taking the heat transfer coefficient
inside the pipe to be h₁ = 60 W/m². °C, determine the temperature drops across the pipe and the insulation.
The determination is based on a unit length of the pipe (L = 1 m).
Assumptions
1. Heat transfer is one-dimensional since there is no indication of any change with time.
2.
Heat transfer is one-dimensional since there is thermal symmetry about the centreline and no
variation in the axial direction.
3. Thermal conductivities are constant.
4. The thermal contact resistant at the interface is…
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- I need help with the second table. and these questions 1- If 1 gallon of oil = 1.4 therm, how many gallons have been wasted by heat loss in Feb? (1 therm = 100,000 BTU) 2- If $1.30 per therm, how much did you waste from house heat loss in Feb?arrow_forwardplease help me with thisarrow_forwardPlease help and show work.arrow_forward
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- please read everything properly... Take 3 4 5 hrs but solve full accurate drawing on bond paper don't use chat gpt etc okkarrow_forwardhints: The flask will be filled with water (at a constant rate of 500 gallons per minute). It will take me exactly 10 minutes to escape from the chains. The diameter of the tank at 1 foot intervals. I am 5 feet 9 inches tall, and I'm pretty skinny so that you can ignore both my volume and the volume of the stool in your analysis. A gallon is equal to 0.13368 cubic feet. You can think of the volume and the height of the water as functions of time. You can easily find an expression for V (t), and then use your expression for volume in terms of height to solve for h(t). after 10 minutes amount of water in the tank=66.84 ft3 t=69.3 minutes h(t)=e66.84t/100pi -1 h(10)=e66.84(10)/100pi -1=7.39 ft Height of stool=1.64 ft Height of water in the tank=7.39 ft Questions: show work How fast is the water rising? I would like to know how long I will have to hold my breath during the last part of the stunt.arrow_forwardPLEASE SHOW THE COMPLETE SOLUTION AND EXAMINATION. THANK YOUUUU.arrow_forward
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- Refrigeration and Air Conditioning Technology (Mi...Mechanical EngineeringISBN:9781305578296Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill JohnsonPublisher:Cengage Learning

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