100.0 mL of 4.0°C water is heated until its temperature is 37°C. If the specific heat of water is 4.18 J/g°C, calculate the amount of heat energy needed to cause this rise in temperature.
Answers
Answer:
13794 J
Explanation:
The formula to apply here is that equation for heat energy ;
q= m*Cp*ΔT
where ;
q= heat variable
m= mass of water = 100 g
Cp = specific heat of water = 4.18 J/g °C
ΔT = 37-4 = 33 °C
Substitute values in the equation as;
q= 100 * 4.18* 33 = 13794 J
Related Questions
Which option describes the best material for the project described in the following scenario?
A bathtub is being designed that will ergonomically shape itself to a person's body, thereby requiring less
material to produce.
Metals are malleable & are excellent thermal conductors, but they do corrode & oxidize.
Wood is not always moisture-proof, but it is renewable & easily obtainable.
Glass is a good insulator, but it is easily breakable.
Plastic is economic, easily cleanable, & moldable.
Answers
Answer:
I think the answer is:
(4) Plastic is economic, easily cleanable, & moldable
Explanation:
Answer: Its "D"
Explanation:
Did the same question on EDG 21 for Engineering and Design
14. Power wrenches are what kinds of tools?
OA. Mechanical
OB. Hydraulic
OC. Pneumatic
OD. Air over oil
Answers
Answer:
I think it’s mechanical but I’m not sure
Explanation:
One integrated circuit design calls for the diffusion of arsenic into silicon wafers; the background concentration of As in Si is 2.5 x 1020 atoms/m. The predeposition heat treatment is to be conducted at 1000°C for 45 minutes, with a constant surface concentration of 8x 10^26 As atoms/m³. At a drive in temperature of 1100°C, determine the diffusion time required for a junction depth of 1.21m. For this system, values of Q and Do are 4.10 eV and 2.29x10^3m/s, respectively.
Answers
The diffusion time that is needed for the junction depth of 1.21 m is given as 13875 seconds
How to solve for the diffusion timebackground concentration of As in Si is 2.5 x 10²⁰ atoms/m
tp = 1000°c
tp = 45 minutes
= 45 x 60 seconds
surface concentration = 8x 10^26
Td = 1100°c
Junction depth = 1.2
= 1.2 x 10⁻⁶m
qd = 4.10ev
Do = 2.29 x 10⁻³
We have to use the equation
\(Dp = Doexp(-\frac{qd}{kTP} )\\\\= (2.23 * 10^-^1^3 m^2/s) exp [-\frac{4.10}{8.62*10^-^5 *(1000+273)} ]\)
= 1.36 x 10⁻¹³
From the relation that we have here
\(Qo = 2cs\sqrt{\frac{Dpte}{pi} } \\\\= 2 * 8* 10^2^6*\sqrt{\frac{1.36*10^-^1^3(45*60)}{pi} }\)
Qo = 1.73 x 10¹³
Dd at 1100
\(Dd = 2.29*10^-^3exp(\frac{-4.10}{8.62x10^-^5)(1100 + 273)}\)
Dd = 2.06 x 10⁻¹⁸m²/s
From the relation we have
\(exp[\frac{(1.2 * 10^-^6)^2}{4*(2.06x10^-^1^8)+d} ]=\frac{1.73*10^1^9}{2.5x10^2^0*\sqrt{pi*2.06*10^-^1^8x+d} }\)
\(ln\frac{2.72*10^7}{\sqrt{+d} } =\frac{1.75*10^5}{+d}\)
Using heat and trial, we would have the value of +d = 13875 seconds
The diffusion time is 13875 seconds
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Which of these involves only a physical change? *
O baking a cake
a rusting bicycle
O adding sugar to tea
Oa banana turns brown
Answers
Answer:
adding sugar to tea
Explanation:
it is the most logical answer
A particular electromagnetic wave travelling in vacuum is detected to have a frequency of 3 × 10 12 Hz. How much time will it take to complete one cycle of this wave? Answer with solution
Answers
3×10^-12 seconds
Explanation:
T=1/f
Xavier is demolishing an old home which contains lead-based paint. What type of respiratory protection should he wear?
Answers
It is crucial for Xavier to ensure that the respirator he chooses fits properly and is certified by a recognized regulatory body, such as the National Institute for Occupational Safety and Health (NIOSH) in the United States.
Demolishing an old home that contains lead-based paint, Xavier should wear appropriate respiratory protection to minimize his exposure to lead dust and fumes.
The type of respiratory protection he should wear depends on the level of lead hazard and the potential for lead dust or fume inhalation.
Here are a few options:
N95 Respirator:
An N95 respirator is a disposable filtering facepiece respirator that can provide effective respiratory protection against airborne particles, including lead dust.
It is designed to filter out at least 95% of airborne particles.
Half-Face Respirator with P100 Filters:
A half-face respirator, equipped with P100 filters, offers both respiratory protection and additional protection against lead dust and fumes.
P100 filters have a higher filtration efficiency than N95 filters, capturing 99.97% of airborne particles.
Powered Air-Purifying Respirator (PAPR):
A PAPR uses a battery-powered blower to draw air through filters and supply it to a hood or mask worn by the user.
PAPRs provide a higher level of protection and a constant flow of filtered air, which can be more comfortable during extended use.
Full-Face Respirator:
A full-face respirator, combined with appropriate filters (such as P100), provides protection for both the respiratory system and the eyes.
This type of respirator is recommended when there is a potential for eye irritation or splashes of lead-containing materials.
He should follow proper donning and doffing procedures and adhere to any additional safety guidelines or regulations applicable in his area.
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Ject the best answer for the question.
. In the drawing, Position 4 represents the
A. pump impeller.
B. venturi.
OC. discharge piping.
D. well casing.
Mark for review (Will be highlighted on the review page)
Answers
The question performs to be had a connection with a diagram of a water well plan. However, the diagram is not determined, making it impossible to correctly answer.
What is a Well System?In general, well systems include components like pour impellers (A), which move water through the tap; venturis (B), which constitute a pressure difference to draw water up; discharge high (C), which transports the excited water to its goal; and well casings (D), which wrap the drilled dent and prevent the collapse of the borehole obstruction.
Knowing the exact position of these components in the drawing hopefully necessary to supply a specific answer.
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4. What is the unit of measure for electricity consumption?
A.Therm
B.Kilowatt-Hour
C.Pounds
D.Kilowatt
Answers
Note that the Unit of Measure for electricity consumption is: "Kilowatt-Hour" (Option B)
Why is Unit Of measure important?Unit of measure is important because it provides a standardized way of expressing quantities and measurements that can be easily understood and communicated across different contexts and languages.
It ensures consistency and accuracy in scientific, commercial, and industrial applications, and facilitates efficient exchange of goods and services.
Without standardized units of measure, there would be confusion, errors, and inefficiencies in all aspects of daily life that involve measurements, from cooking recipes to international trade.
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how has ICT made the world smaller
Answers
Information and Communication Technology (ICT) has, in various ways, contracted the world to a much smaller scale.
How has ICT made the world smaller?Firstly, it has allowed rapid and trouble-free communication across lengthy distances, eliminating the hindrances of both time and distance.
This progress has stimulated the development of international trade and commerce and made it possible for people from all regions of the earth to come together to initiate projects and initiatives.
Additionally, ICT has simplified the approach of gaining access to and sharing information beyond borders, linking the planet more firmly and reducing deficiencies of knowledge.
Lastly, ICT has enabled individuals to journey more quickly and associate with cultures other than their own, inaugurating a spirit of worldwide fellowship.
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True/False: An output file is a file that data is written to. True False
Answers
Answer:
True maybe
Explanation:
Definitions of output file. (computer science) a computer file that contains data that are the output of a device or program.Output files store data for a single variable.
A water turbine is to be designed to produce 27MW when running at 93.7 rev/min
under a head of 16.5m. A model turbine with an output of 37.5kW is tested under
dynamically similar conditions with a head of 4.9m . Calculate the:
a. model speed; b. scale ratio; c. assuming a model efficiency of 88%, estimate the volume
flow rate through the model; and d. if it is estimated that the force on the thrust bearing of
the full-size machine is 7.0GN , determine the bearing thrust of the model.
Answers
The Answers for the given question are as follow:
a. The model speed is approximately 31.62 rev/min.
b. The scale ratio is approximately 0.0417.
c. The estimated volume flow rate through the model is approximately 943.44 m^3/s.
d. The bearing thrust of the model is approximately 9.72 kN.
To calculate the required values for the water turbine model, we can utilize the concept of dynamic similarity.
a. To find the model speed, we can use the principle of geometric similarity, which states that the ratio of speeds is equal to the ratio of the square roots of the head. Thus:
Model speed = (√(Model head))/(√(Full-size head)) * Full-size speed
= (√4.9/√16.5) * 93.7 rev/min
= 31.62 rev/min
b. The scale ratio can be determined using the equation:
Scale ratio = (√(Model power))/(√(Full-size power))
= (√37.5kW)/(√27MW)
≈ 0.0417
c. To estimate the volume flow rate through the model, we can use the power equation:
Model power = (Model efficiency) * (Volume flow rate) * (Model head) * (Gravity)
37.5kW = 0.88 * (Volume flow rate) * 4.9m * (9.81m/s^2)
Solving for the volume flow rate:
Volume flow rate = 37.5kW / (0.88 * 4.9m * 9.81m/s^2)
≈ 943.44 m^3/s
d. To calculate the bearing thrust of the model, we can use the principle of force similarity:
Bearing thrust model = (Model power / Full-size power) * Full-size bearing thrust
= (37.5kW / 27MW) * 7.0GN
≈ 9.72kN
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Which of the following examples demonstrate qualifications that are most helpful for Engineering and Technology careers? Check all that apply.
Corey is a good driver, and has never had an accident.
Jayson is persistent, and doesn’t give up until he has solved a difficult problem.
Keri has good customer-service skills for being pleasant with customers.
Cleo is good at negotiating prices of products she is purchasing.
Dudley’s creativity helps him in designing new products.
Marisol is good at learning new things quickly.
Answers
Your load voltage and arc voltage measurement should be
Answers
Answer:
taken at the same time to ensure accurate results.
Explanation:
The first step of the Engineering Design Process is to select the
best possible solution true or false
Answers
Answer:
I think it's false
Explanation:
the first step is to figure out the needs and constraints
At a high school science fair, Connor won first place for his replica of the Golden Gate Bridge. Connor liked the project so much, he now wants to design bridges as a career. Which will best position Connor do that? earning a bachelor's degree in Civil Engineering from a four-year university, completing an internship, and seeking a job at a private firm O earning a doctoral degree in Civil Engineering and seeking a job in the public works department of a state or federal government completing an internship with a state or federal government before earning an associate degree in Civil Engineering from a technical school working at an entry-level job at a private engineering firm before earning a degree in Civil Engineering from a four- year university
Answers
Answer:
a
Explanation:
Answer:
I did the edge test and a is correct
Explanation:
What term describes a guardrail system
Answers
Answer:
The ( Fall Protection in Construction ) is the term which relates to these mechanisms , i.e , guardrail system, a positioning system and a personal fall arrest system.
Explanation:
thanks me later
Answer:
The ( Fall Protection in Construction ) is the term which relates to these mechanisms , i.e , guardrail system, a positioning system and a personal fall arrest system.
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As part of their extensive kitchen remodel, the Lees told their electrical contractors that they would need plenty of outlets for their many appliances, The contractors knew that they would need to install small appliance branch circuits using what kind of wire and circuit breaker? A. No 2 wire and 15 A circuit breakers. B. No 12 wire and 20 A circuit breakers. C. No 0 wire with 100 A circuit breakers. D. No 6 wire with 15 A circuit breakers.
Answers
Since the contractors knew that they would need to install small appliance branch circuits, the kind of wire and circuit breaker to use in the kitchen are option B. No 12 wire and 20 A circuit breakers.
What type of breaker is used for the kitchen?The dual-function breaker is known to be one that often uses both types of protection into one unit since kitchens and laundry rooms need both GFCI and AFCI protection.
Actually, your kitchen requires a number of distinct circuits—at least seven, to be exact. A separate appliance or electrical element in the kitchen can be powered by each circuit: Your fundamental lighting circuit should have a 15 amp, 120 to 125 volt output.
Note that Kitchens require 12-gauge wiring and a separate 20-amp circuit. The sheath on 12-gauge wire nowadays is yellow, whereas the sheath on an old cable might be white. Arc fault and ground fault circuit interruption (AFCI, GFCI) protection are required for new circuits in kitchens.
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will a lan evo be able to beat an r34 gtr on the mountain pass?
Answers
Answer:
I honestly think that it would.
Explanation:
The reason I say this is because first the r34 goes 60 mph in 4.8 seconds but the max it goes is about 165.
The Ian evo climbs to 170 in just 23 seconds but it depdends on the driver to.
Answer:
Yes, It would.
Select the correct answer.
Which sentence best explains the problem of power variability seen in generating electrical energy from wind energy?
A.
The power generated by a wind farm is not constant because of irregular wind patterns.
B.
Wind energy can only generate alternating voltages and not constant voltages.
C.
Transformers used in wind farms only work with alternating voltages.
D.
Wind turbines require installation in a zigzag pattern to make efficient use of the force of winds.
E.
Variable transformers are required to increase electric voltage generated by wind turbines.
Answers
Answer:
A.
The power generated by a wind farm is not constant because of irregular wind patterns.
[ 3/8-28 UNC] According to the thread note, what does 3/8 mean?
O Pitch
O Diameter of the Screw
Threads per Inch
O Length of the Screw
Answers
Answer:
It diameter
Explanation:
That where the diameter always is.
Life Orientation project grade 12 memorandum 2023 responsible citizenship and human rights violations
Answers
The topic is "Exploring the Impact of Social Media on Human Rights Activism and Responsible Citizenship."
What is the research essay for the above topic?Social media has transformed human rights activism and responsible citizenship. It enables global awareness through instant information sharing and reaches a broad audience, uniting activists against injustice.
Mobilization is facilitated through online campaigns and hashtags, fostering collective action and impactful change. Social media also empowers citizens to voice concerns, engage in debates, and hold authorities accountable.
However, challenges include misinformation and oversimplification of complex issues. Offline efforts should complement online activism for real-world impact. Social media is a powerful tool for human rights and responsible citizenship when used responsibly.
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Life Orientation project grade 12 memorandum 2023 responsible citizenship and human rights violations
1. Choose a topic that is relevant and of interest to you.
2. Conduct thorough research on your topic, using a variety of sources such as books,
websites, and interviews.
3. Organize your research into a clear and concise format, such as an essay or
presentation.
4. Use facts, statistics, and examples to support your argument and to demonstrate
your understanding of the topic.
5. Present your findings in a clear and engaging manner, using visual aids if
necessary.
explain in some detail why there are so many different kinds of fasteners and fastener accessories describe the kind of forces which fasteners are often exposed
Answers
Fasteners are a broad group of tools, such as screws, nuts, and bolts, that all have the same purpose: to mechanically hold items together. Of fact, glue can serve this purpose, but glue is not a form of fastener. As a result, we must expand our definition. Hardware fasteners keep items together mechanically.
The various forces acting on fasteners are:
Bolts - Twisting force - Torque Screws - Clamping Force; compressive forcesWhat are the uses of Fasteners?Fasteners are a pretty broad group of tools, such as screws, nuts, and bolts, that all have the same purpose: to mechanically hold items together. Of fact, glue can serve this purpose, but glue is not a form of fastener. As a result, we must expand our definition. Hardware fasteners keep items together mechanically.
The following are types of fasteners;
Screws. Nails. Bolts, Nuts, and Washers. Anchors. Rivets.Learn more about Fasteners:
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The ____ uses signals from the engine control module and the crankshaft position sensor to determine when to stop and start the current flow through an ignition coil.
Answers
Answer:Ignition control module (ICM)
Explanation:
1) A cylinder has a volume of 20 cubic feet. What is that volume in cubic inches? (1 ft = 12 in)
Answers
Recall that there are
12
inches in
1
foot. Thus, we can state:
12
in.
1
ft.
=
x
4
ft.
x
=
12
in.
×
4
ft.
1
(ft.)
x
=
48
in.
Hence, the cylinder has a height of
48
inches.
Now, we can apply the formula for volume of a cylinder to effectuate our calculation. The formula in question is
V
=
a
base
×
h
, or
V
=
r
2
π
×
h
.
However, we know our diameter but we don't know our radius. As you probably know, the diameter is linked to the radius b the formula
d
=
2
r
. Solving for
r
and substituting:
r
=
d
2
r
=
12
2
r
=
6
∴
The radius of the cylinder measures
6
inches.
V
=
r
2
π
×
h
V
=
6
2
π
×
48
V
=
(
36
×
48
)
π
V
=
1728
π
in
2
Note that this answer is in exact value. Rounded to two decimal places, the volume is
5428.67
in
Technician A says an automotive tire's belts are the body of the tire. Technician B says an
automotive tire's belts are sometimes used to strengthen the plies and stiffen the treads. Who is
right?
Answers
Answer:
Honestly, B. Read below for more
Explanation:
Tire belts help with keeping the wheels of a vehicle stable and sturdy, it does keep the threads together as well. I mean, you could in a way call it the body of a tire but Technician B is more specific. I tried to answer with the best of my ability, I'm not 100% sure on A so ask your teacher or classmates for additional help.
Difference between romanesque and gothic architecture.
Answers
Answer:
The main difference is that Romanesque buildings will include round arches and blunt towers while gothic will have pointed towers
----- ----- ----- ----- ----- ----- ----- ----- -----
~Romanesque has:
- separate compartments
- rounded arches
- small windows.
~Gothic is:
- one piece
- has pointed arches
- large windows
Hope this Helps!
What function or functions in the body might be affected if a person fell and injured the back of their head?
Answers
Answer:
its Daddys Toe Nail I Told u this 10m Times give me brainlyest
Answer:
In closed head injury, the rapid movement of the brain can also stretch and injure neuronal axons - the long threadlike arms of nerve cells in the brain that link cells to one another, that link various parts of the brain to each other and that link the brain to the rest of the body.
Draw the six principal views of
the object whose pictorial
drawing is given in the figure
using both the first and third
angle projection systems. (use
1:1 scale)
FRONT
Answers
Explanation:
See what Challenge I completed on Ablo https://ablo.live/s/1/yIwE1xnX88zg0liSeC7njA
I want descriptions on
Current State of Programming in Pakistan
Scope of Programming in Pakistan
Answers
The scope of BS computer science in Pakistan is quite vast
try this :)
technician a says a worn or damaged idler arm can cause front-end shimmy. technician b says a worn or damaged idler arm can cause hard steering. who is correct?
Answers
Insufficient power steering fluid in your system is the most frequent cause of a stiff steering wheel.
What can be a sign that the steering system's parts are damaged?Any noises emanating from the steering wheel could be an indication of a broken steering belt, worn internal gears, or insufficient steering fluid. A new belt must be purchased right away if there is a belt problem. When making a turn, have you noticed a whining or a delayed response? The pump might be about to stop working.Insufficient power steering fluid in your system is the most frequent cause of a stiff steering wheel. This frequently occurs when there is a system leak coming from the pressurized hose location. The majority of the time, the reason for the fluid leak is a fractured or loose hose.To learn more about Steering refer to:
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