Yasir is trying to build an energy-efficient wall and deciding what materials to use. How can he calculate the thermal resistance of the wall?
A. It's the mean layer thermal resistance.
B. It's equal to the least thermally resistant layer.
C. Add the thermal resistance of its layers.
D. Measure the thermal loss.
Answers
Answer:
Add the thermal R values of each wall layer.
Explanation:
Fiberglass insulation R value, sheetrock, sheathing, siding etc. All sum together to one composite opposition to heat transfer/loss.
Q= U x A x Delta T
Q= heat transfer btuh
U= 1/R inverse of resistance
A= area of surface
Delta T is temerature difference across the wall.
Related Questions
The vanelli family is building a house and wants to save anywhere the can which of the following choices would be the most electric system for them to operate
Answers
Note that if the vanelli family is building a house and wants to save anywhere they can the choice that would be most expensive electric system for them to operate is a Heat Pump. (Option a)
What is a heat pump?A heat pump is a device tha tuses electricity to generate heat so that during winter and very cold period, the house is kept warm.
This is notably one of th most expensive devices to maintain in a home.
Hence it will be very expensive for the Vanelli familyto build a house that has many heat pumps. They can opt for solar powered heat pumpts instead.
Learn more about heat pumps:
https://brainly.com/question/13198025
#SPJ1
The Vanelli family is building a house and wants to save money anywhere they can. Which of the
following choices would be the most expensive electric system for them to operate?
A. Heat pump
B. Baseboard
C. Radiant ceiling
D. Program clock
9. An orifice tube restriction is often indicated by:
A.low gauge pressure
B.high gauge pressure
C.inoperative compressor
D.no compressor cycling
Answers
Answer:
I believe 80% the answer is low gage pressure.
Explanation:
while naturally a restriction of an orifice like placing your thumb on a water hose would cause a high pressure output, however in an entire system if the proper amount of fluid is not making its way through the system then there would be inadequate system pressure. I hope my train of thought is correct though. let me know either way
Thermal energy is...
Question 1 options:
The temperature of something
The total kinetic and potential energy of its particles
How much stuff the object is made up of
How much an object resists a change in it's temperature
Answers
Answer:
b
Explanation:
i took the test
Examples of modern manufacturing allowing for customization to make specific items to suit individual needs.
Answers
Modern manufacturing has significantly advanced to cater to customization and meet individual needs.
Few examples of how modern manufacturing allows for customization:
1)3D Printing/Additive Manufacturing: 3D printing enables the production of highly customized items by building layer upon layer of material.
This technology allows for the creation of unique shapes, sizes, and designs, enabling customization on a personal level.
From customized prosthetics to personalized jewelry, 3D printing revolutionizes manufacturing by tailoring products to individual requirements.
2)Mass Customization in Apparel: Traditional manufacturing processes often involved producing items in standard sizes, limiting options for consumers.
However, modern manufacturing techniques, such as computer-aided design (CAD) and computer-aided manufacturing (CAM), allow for mass customization in apparel.
By utilizing body scanning and virtual fitting technologies, companies can offer custom-made garments that fit an individual's unique measurements and style preferences.
3)Customized Electronics: With advancements in technology, manufacturers can now offer customization options for electronic devices.
Customers can personalize specifications such as memory capacity, display size, and processing power to suit their needs.
Some companies even allow customers to design the appearance and choose specific features of their gadgets, ensuring that the final product aligns with their preferences.
4)Personalized Food and Beverages: Manufacturing has extended to the food and beverage industry, enabling customization in culinary experiences.
Companies now offer personalized nutrition plans, customized meal kits, and even 3D-printed food tailored to individual dietary requirements and taste preferences.
5)Automotive Industry: The automotive industry has embraced customization, allowing customers to configure various aspects of their vehicles, including color, trim, interior options, and additional features.
Some manufacturers offer online platforms where customers can design and visualize their personalized cars before ordering.
For more questions on Modern manufacturing
https://brainly.com/question/8462042
#SPJ8
Perchuty (P. z fan ce the Treffe resistivalyThe law of resistivity.
Answers
We can see here that the law of resistivity, also known as Ohm's law, states that the electrical resistance of a conductor is directly proportional to its resistivity and length, and inversely proportional to its cross-sectional area.
How is law of resistivity represented?The Law of resistivity can be mathematically represented as:
R = ρ × (L / A)
Where:
R is the electrical resistance of the conductor,
ρ (rho) is the resistivity of the material,
L is the length of the conductor, and
A is the cross-sectional area of the conductor.
The resistivity (ρ) is a characteristic property of a material that quantifies its ability to resist the flow of electric current. It depends on the nature of the material, its temperature, and sometimes its purity. Resistivity is measured in ohm-meters (Ω·m).
Learn more about resistivity on https://brainly.com/question/30611906
#SPJ1
A student lifts a 30.0 newton ball 7.00 meters in 5.00 seconds. How many joules of work did the student complete?
Answers
Answer: 210 jouls
Explanation:The work done by the student can be calculated using the formula:
Work = Force x Distance x Cosine(theta)
where Force is the force applied on the ball, Distance is the distance moved by the ball, and theta is the angle between the force and the direction of motion (in this case, theta is 0 because the force is applied in the upward direction, which is the same as the direction of motion).
Since the ball is lifted vertically, the angle between the force and the direction of motion is 0, so cosine(theta) is 1. Therefore, we can simplify the formula to:
Work = Force x Distance
Substituting the given values, we get:
Work = 30.0 N x 7.00 m
Work = 210.0 J
Therefore, the student completed 210.0 joules of work in lifting the ball
A theory is accepted as true when
a single experiment produces evidence that proves it is true.
several prominent scientists support the theory.
several repeated experiments yield similar results.
a few significant experiments produce similar results.
Answers
It is true when:
several repeated experiments yield similar results.
Thus, the answer is C
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
For more questions on force, click on:
https://brainly.com/question/12785175
#SPJ8
The
converts the motion of the brake pedal into hydraulic
pressure.
Select the correct answer.
A Brake baduter
B. Slave cylinder
C. Master cylinder
D. Brake fluid
Answers
Answer:
c ithink
Explanation:
what should you consider when choosing the type of head protection you wear
Answers
When selecting head protection for your job, you should take into account a number of variables, including protection purpose, material, class or grade, and flammability.
What factors must you take into account when choosing when to wear PPE?When caring for someone who has a confirmed OR suspected case of COVID-19, or when they are in quarantine, PPE should be used. Before entering the room or the person's house, put on the PPE. but is vulnerable to infection due to recent moves or exposure. when a person's COVID-19 status is known or suspected.
Why is wearing head protection important?If there is a chance that you could hit your head on a fixed object or be injured by falling debris, head protection is intended to keep you safe (e.g. where there is restricted headroom).
to know more about head protection here:
brainly.com/question/11272362
#SPJ1
Click on ONE answer only.
What does this sign indicate
Answers
How many projected openings are there currently for roofers in Ohio?
150
7000
650
600
Answers
Answer:
650
Explanation:
2. It is a measuring instrument used to record the amount of
electrical consumption.
A. clamp meter B. micrometer
B.micrometer
C. steel rule
D. electric meter
Answers
Answer:
The correct option is;
D. Electric meter
Explanation:
An electric meter is a metering device that is used for the measurement of the electric power consumption of an electrical powered tools, a living space or a building
Electric meter readings are used by electric utility company to sell electric power to consumers at a given rate such that it allows the electric utility company to receive payment for the total power supplied, and for the consumer to regulate the amount of power consumed
The electric meters are usually calibrated in kilowatt hour (kWh) and prepaid meter displays the amount of units of power bought, while post paid meters are usually read once each billing period which is usually one month.
.provide feedback to the controller about the robot's environment, a limited sense of sight and sound
Answers
Answer:
go to settings and u may figure out
Have the class participate in naming the different senses humans use; sight, hearing, touch, taste, and smell. Have students share ideas on how humans collect data from the environment using these five senses. Ask: What do these senses tell you about your environment? Elicit answers from students that reflect decision-making. For example, touch can tell you if something is too hot or too cold. Hearing can tell you the type of environment you’re in. Sight can tell you how far away obstacles might be.
Introduce students to the idea that robots also use senses, in the form of sensors, to collect information from the environment. Ask: Why do robots need sensors? Explain that robots need sensors to make decisions about tasks, like how to move or where to go next. Just like a student needs to wait until there is no traffic to cross the street, a robot needs to have an understanding about its surroundings. Ask: How do humans use their senses to make observations about their surroundings? Answers should include seeing what’s around them, hearing noises that give them clues to what’s nearby, and feeling items that might be near them.
Ask students to each draw a map of the classroom or room they are in. Give them a few minutes to make their maps. After students have finished making their maps, ask: What senses did you use to make your maps? Most students will have relied heavily on their sense of sight. Ask: If you could not see, what other senses could you use? Explain that some robots make maps of their environment using their various senses.
As people enter the hotel and look at the ceiling, they see a huge chandelier whose lights enhance the carvings on the ceiling. Which structural element is preventing the chandelier from causing cracks on the roof?
Answers
The structural element that is preventing the chandelier from causing cracks on the roof is option B. plate.
What keeps a chandelier in place?It is firmly fastened to a wood block or joist. Make sure the ceiling box is rated to sustain your chandelier fixture as the most of them can support 50 to 75 pounds. Remove the present ceiling fan or light fixture.
Therefore, To hold it, The finest option is a heavy, robust chain that is split on the side (never on the bottom). There is a base plate on some chandeliers. The chandelier is bolted onto the base plate once it has been put on the ceiling.
Learn more about chandelier from
https://brainly.com/question/27853369
#SPJ1
See options below
A column
B. plate
C beam
D. true
"Technician A says that waved springs between the clutch facings results in a smoother engagement of the clutch when starting from a stop. Technician B says that the heavy torsional coil springs in the
clutch disc clamp the clutch disc between the flywheel and pressure plate. Who is correct?
Select one
O a Technician A
O b. Technician B
O c. Both A and B
Od. Neither A nor B
Answers
As per the given scenario, Both A and B are correct. The correct option is c.
What is torsional coil?Helicoidal springs that produce a torque or rotating force are called torque springs.
A torsion spring has ends that are connected to other parts, and when those parts spin around its centre, the spring tries to push them back into place.
While starting from a standstill, judder is reduced and engagement is smoother thanks to the employment of waved springs.
They aid in reducing noise and vibration brought on by clutch engagement. On the other hand, the clutch disc is clamped between the flywheel and pressure plate by strong torsional coil springs.
They aid in the transmission of engine torque and guard against clutch slippage.
Thus, the correct option is c.
For more details regarding torsional coil, visit:
https://brainly.com/question/30612977
#SPJ9
Can someone please help me this is urgent!?
Answers
Answer: my answer would be C.
Explanation:
Answer:
it would be C
Explanation:
if you look at the times 0-2 you see it goes to 2.0 so now it cant be A or D now if you look at times 2-4 you see it goes to 3.0 so now B isnt right and then 4-6 its stays at 3.0 so now its definitely C
The power steering system service can: ?
Answers
Answer:
The power steering system assists drivers to steer the vehicle by increasing steering effort needed to turn the wheel, allowing it to be easier for the vehicle to turn.
A b c or d?????? Please help
Answers
Answer:
Explanation:
D Stationary measurement
define horizontal shapes
Answers
Horizontal shapes are simply defined as shapes that identified by their alignment and orientation along the horizontal axis.
What are horizontal shapes?Horizontal shapes are simply identified by their alignment and orientation along the horizontal axis.
These shapes appear to be extended in a left-to-right or right-to-left direction, with a greater width-to-height ratio. Rectangles, squares, lines, and strips are typical examples.
While lines are one-dimensional, horizontal objects with an unlimited length, rectangles and squares have four sides and have horizontal top and bottom boundaries. Strips are lengthy, varying-width horizontal shapes that are frequently utilized in design and the arts.
Horizontal shapes can imply security, harmony, calmness, and a sense of rootedness.
Learn more about shapes at: https://brainly.com/question/25965491
#SPJ1
what two factors are changing when the current is changed on an electric generator
Answers
Explanation:
As one side of the coil moves up through the magnetic field, a potential difference is included created in one direction, as the other rotation continues and that side of the coil moves down.
With which type of media are you interacting when you read an online shopping website? A. film B. print C. electronic D. social media Please select the best answer from the choices provided A B C D
Answers
With which type of media are you interacting when you read an online shopping website?
A. film
B. print
C. electronic
D. social mediaDigital media/social media. Normally through ads
The resistance of a wire is proportional to its length. If 2' of an
electrical wire has a resistance of 12 ohms, what is the
resistance of 9' of the same wire?
Answers
Answer:
54
Explanation:
R=r(L/A)
12/x = 2/9
therefore x=54
The distance between the Sun and the Earth is 150000000km (approximately) and the Sun subtends an angle of 32' with eye of man of the Earth, find the diameter of the Sun.
Answers
Answer:
the diameter of the Sun is approximately 1.392 million kilometers.
Explanation:
To find the diameter of the Sun, we can use the formula:
diameter = 2 x distance x tan(angle/2)
where distance is the distance between the Sun and the Earth, angle is the subtended angle of the Sun, and tan is the tangent function.
Substituting the values given, we get:
diameter = 2 x 150000000 km x tan(32'/2)
diameter ≈ 1.392 x 10^6 km
Therefore, the diameter of the Sun is approximately 1.392 million kilometers.
In DC electrode positive, how much power is at the work clamp?
2/3 power
1/3 power
1/2 power
1/4 power
Answers
Answer:
1/3 power
Explanation:
I'm just a smart guy
Question 6 of 25
The diameter of a hydrogen atom is 0.000000000106 m. How can this
number best be expressed in scientific notation?
O A. 10.6 x 10-9m
B. 1.06 x 10-9m
C. 1.06 x 10-10 m
O D. 1.06 x - 1010 m
SO
Answers
Answer:
c
Explanation:
move the decimal over 10 spaces to the right. you'll get 1.06
Answer:
C. 1.06 x 10-10 m
Explanation:
I just did it on APX
How can I make the best build on Naruto shinobi striker
Answers
To create the best build in Naruto to Boruto as Shinobi Striker, one should consider the playstyle, and preferred role, as well as the abilities and stats the personal character.
Shinobi Striker offers four main roles such as Attack, Defense, Ranged, and Heal. Each role has unique abilities and strengths. Decide which role suits your playstyle and the team composition you're aiming for.
Each character has a set of unique jutsu and ultimate abilities. Familiarize yourself with these abilities and choose ones that complement your playstyle and role. Some abilities are better for crowd control, while others excel in dealing damage or providing support.
Learn more about Shinobi Striker on:
https://brainly.com/question/29494706
#SPJ1
Transportation plays a vital role in the operation of other technologies, such as manufacturing, construction, communication, health and safety, and agriculture. Describe the transportation process used in the agriculture industry.
Answers
Answer:
Transportation in agriculture is dependent on the the type of product produced from the farm
Grain produced in the farm are collected in bulk and covered with a tarp in Grain Hopper Trailer and hauled to long distances if required
Reefers, which are refrigerated vans are the transportation means by which perishable plant and animal products such as meat, milk, vegetables, and fruits are transported to their destination
Tank trailers are used to transport liquid food products as they prevent slushing effect
Livestock haulers are used for the safe transportation of livestock to their destination as they allow good amount of air flow to the livestock they carry
Farm produce are also transported by rail, through trains, shipping through water, or by air
Explanation:
Answer:
A
Explanation:
a heating element operates on 115 v. if it has a resistance of 15.4 ohms, what current, in amps, does it draw?
Answers
The heating element is currently receiving 7.47 mps of current. we can construct the equation for the current flowing through the heating element as well as the potential difference across the heating element depending on the resistance of the element.
What is the definition of the houses law?The Homes Law, which indicates that the current flowing through the heating element and into the resistance is equivalent, is applied in this case, which states that the potential difference across the hitting element, or V, is equal to that product.Using this equation, we can construct the equation for the current flowing through the heating element as well as the potential difference across the heating element depending on the resistance of the element. Furthermore, across the L.A. Mentors 115 problem, the potential difference is bold. Additionally, there is a possibility of a parliament with 15 14 arms; therefore, the maximum electric current is 115. The heating element is currently receiving 7.47 mps of current.To learn more about Homes Law refer to:
https://brainly.com/question/23164267
#SPJ4
In 1990, a large resort hotel was built on the island where these pheasants live. Explain how this cought have affected the
pheasant population.
Answers
The construction of the resort hotel could have had a significant negative effect on the pheasant population.
Impact of large resort hotel on populationThe building of the hotel could have destroyed the natural habitat of the pheasants, leading to a decrease in their food and nesting resources. Additionally, the presence of the hotel could increase the amount of human activity on the island, leading to increased noise and light pollution, as well as increased disruption from people and vehicles.
All of these factors could potentially lead to a decrease in the pheasant population.
Learn more about population here:
https://brainly.com/question/25630111
#SPJ1