Answer:
I'm not 100 percent sure, but I'm pretty sure that it is half of an ellipse.
Explanation:
For one, if you look at a picture of a hyperbola, you can see that it looks like nothing and is nothing compared to the parabola. However, looking at an ellipse, you can clearly see the resemblance between the two.
Once again, I am not 100 percent certain with this answer, so if you have anything to say about it please let me know.
Have a nice day!
Which description best explains a motor's working principle?
A.
an electric coil sits within a semiconductor and then receives exposure to a strong magnetic field
B.
a junction diode sits between the poles of a strong electromagnet, which generates torque
C.
a transistor receives voltage at one terminal, which causes current to flow
D.
a loop of wire carrying a current sits between the poles of a magnet, causing rotational motion
low accuracy and low precision
How many grams of water at 5.00 °C would we need to mix with 140.0 g of water at 85.0 °C to obtain a final temperature of 43.0 °C ?
Answer:
We need 154.737 grams of water at 5 ºC to obtain a final temperature of 43 ºC.
Explanation:
From Thermodynamics we know that mixing processes involve the interaction of substance at different temperatures so that thermal equilibrium is reached by cooling down the substance with highest temperature and heating up the subtance with lowest temperature.
Let suppose that mixing occurs at steady state, that is, that system does not have energy interactions with surroundings. According to the First Law of Thermodynamics, we get that energy interactions are represented by:
[tex]H_{L} + H_{H} -H_{R} = 0[/tex]
[tex]H_{L} + H_{H} = H_{R}[/tex] (Eq. 1)
Where:
[tex]H_{L}[/tex] - Enthalpy of cold water, measured in joules.
[tex]H_{H}[/tex] - Enthalpy of hot water, measured in joules.
[tex]H_{R}[/tex] - Enthalpy of mixed water, measured in joules.
Since there are no phase changes, we can expand formula by using the definition of sensible heat. That is:
[tex]m_{L}\cdot c_{w}\cdot T_{L}+m_{H}\cdot c_{w}\cdot T_{H} = m_{R}\cdot c_{w}\cdot T_{R}[/tex]
[tex]m_{L}\cdot T_{L}+m_{H}\cdot T_{H} = m_{R}\cdot T_{R}[/tex] (Eq. 2)
Where:
[tex]m_{L}[/tex], [tex]m_{H}[/tex], [tex]m_{R}[/tex] - Masses of cold, hot and mixed water, measured in grams.
[tex]c_{w}[/tex] - Specific heat of water, measured in joules per gram-Celsius.
[tex]T_{L}[/tex], [tex]T_{H}[/tex], [tex]T_{R}[/tex] - Temperatures of cold, hot and mixed water, measured in Celsius.
But we know from Principle of Mass Conservation that:
[tex]m_{R} = m_{L}+m_{H}[/tex] (Eq. 3)
Then, we simplify (Eq. 2) and clear the mass of cold water:
[tex]m_{L}\cdot T_{L}+m_{H}\cdot T_{H} = (m_{L}+m_{H})\cdot T_{R}[/tex]
[tex]m_{H}\cdot (T_{H}-T_{R}) = m_{L}\cdot (T_{R}-T_{L})[/tex]
[tex]m_{L} = m_{H}\cdot \left(\frac{T_{H}-T_{R}}{T_{R}-T_{L}} \right)[/tex] (Eq. 4)
If we know that [tex]m_{H} = 140\,g[/tex], [tex]T_{L} = 5\,^{\circ}C[/tex], [tex]T_{R} = 43\,^{\circ}C[/tex] and [tex]T_{H} = 85\,^{\circ}C[/tex], the mass of cold water needed to obtain a final temperature is:
[tex]m_{L} = (140\,g)\cdot \left(\frac{85\,^{\circ}C-43\,^{\circ}C}{43\,^{\circ}C-5\,^{\circ}C} \right)[/tex]
[tex]m_{L} = 154.737\,g[/tex]
We need 154.737 grams of water at 5 ºC to obtain a final temperature of 43 ºC.
These students are not ready for their test on the electoral college. So many students are still getting the information wrong!
Answer:
?
Explanation:
I don't understand this I am really bad at measurements
Answer:
its about 2 and a half
Explanation:
What are the different branches of engineering involved in manufacturing a general-purpose elevator?
Answer:
technical engineering
The different branches of engineering involved in manufacturing a general-purpose elevator are:
1. Mechanical engineering
2. Electrical engineering
3. Civil engineering
4. Industrial engineering
5. Safety engineering
What are the different branches of engineering involved in manufacturing a general-purpose elevator?The different branches of engineering involved in manufacturing a general-purpose elevator are:
1. Mechanical engineering: Responsible for the design, construction, and operation of the elevator's mechanical systems.
2. Electrical engineering: Responsible for the design, installation, and maintenance of the elevator's electrical systems.
3. Civil engineering: Responsible for the design and construction of the elevator's shaftway and hoistway. T
4. Industrial engineering: Responsible for the efficient design and operation of the elevator's manufacturing process.
5. Safety engineering: Responsible for ensuring that the elevator is safe to operate.
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I can't figure this out
Answer: 2.125 in.
Explanation:
Answer:
2 1/8 in is the answer
What is ONE DIFFERENCE between civil structural engineering
Answer:
One of the differences is that civil engineering focuses on design elements while structural engineering is more concern on inspecting the materials used for construction. The structural engineers are the one who are supposed to ensure that the materials used for construction can support the design of the structure.
Explanation:
I’m Mrs.middletons class, there are 7 more boys than girls. If there are 29 total students in the class, how many boys are there?
Answer:
18.
Explanation:
well take 7 away from 29 that leaves you with 22 half of 22 is 11 and if the were 7 more boys than girls you would add the 11 and 7 that makes 18 boys and 11 girls in the class
the ability to withstand abrasion is determined by the size, number of wires and construction of the rope
Answer:
In the explanation. :)
Explanation:
Abrasive Wear – The ability of wire rope to withstand abrasion is determined by the size and number of the individual wires used to make up the rope. Smaller wires bend more readily and offer greater flexibility, but are less able to withstand abrasion. Larger wires are less flexible, but withstand abrasion better.
Hope this helps. Have a great day!
Ilove you is an example of?
Answer:
the brain has diffrent parts so one of them has a connect to the heart so when you fall in love the brain is signaling the heart poison and that posion tells the heart i you react about it and its a example of your heart
I'm really bad at measurements so I don't understand this.
Answer:
the answer should be 16
When should the shop ventilation fan be turned on?
Answer:
When cars are running
Explanation:
The shop ventilation fan should be turned on when there are smells, dampness, smoke, and other contaminants in the shop environment. Also, when there is excessive temperature and moisture it should be turned on.
What is Ventilation?
Ventilation assists in cooling your attic by pushing away suffocating hot air from within and bringing in cool air from outside. This keeps hot air from entering your home and raises the temperature in your living area, reducing the strain on your air conditioner.
Exhaust fans purify the air by eliminating smells, dampness, smoke, and other contaminants. Also, it avoids Mold that may grow when there is steam and moisture in the air.
Hence, The shop ventilation fan should be turned on when there are smells, dampness, smoke, and other contaminants in the shop environment. Also, when there is excessive temperature and moisture it should be turned on.
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What is the relationship between permanent modular construction (PMC) and purpose-built construction?
O PMC tends to fit the construction purposes for which it was specifically designed
O PMC is designed to be customizable and adaptable in the field.
O PMC tends to be best suited to large construction projects encompassing a variety of purposes.
O PMC is adaptable to a broad range of construction purposes.
Answer:
A. PMC tends to fit the construction purposes for which it was specifically designed.
Explanation:
took the test go it right
2. If a paint contains
then the palnt booth filter must be considered hazardous waste.
A) O Lead
B) O Cadmium
C) O Chromium
D) O All of the above
Answer:
cadmuim
Explanation:
I really don't understand this please help!!!
Answer:
2 8/10TH INCHES
Explanation:
What can happen to you if you are in a crash and not wearing a seat belt?
Explain.
Explanation:
If you don't wear your seat belt, you could be thrown into a rapidly opening frontal air bag. Such force could injure or even kill you.
NEED HELP WILL MARK BRAINLEST!!
A graphic designer would focus on which of the following when using typography? size of font
size of image
animating an image
animating text
How are angular cuts made on a horizontal bandsaw
Group of answer choices
Turning the blade guides to the desired angel
Angular cuts cannot be made on this saw
Holding the workpiece higher on one end than the other
Swiveling the vise to the desired angel
Answer:
A. Turning the blade guides to the desired angel
Explanation:
In a horizontal bandsaw, the user moves the blade to sweep an arc from a fixed cutting plane that will produced repeated number of fixed angle cuts.
Using horizontal bandsaw, only straight cuts at a fixed angle can be attained.
Fixed angle cuts can be made from a horizontal bandsaw thus answer choice B is incorrect.
While using the horizontal bandsaw, the work piece is held stationary while the blade slides on the rollers. Thus answer choice C is incorrect.
The material is normally held with claps to a stationary position before a cut is made by the blade that that repeatedly attains cuts at fixed angle. The vise is not involved. Answer choice D is incorrect.
Which quantity does a charge-coupled device measure?
Explanation:
A charge-coupled device (CCD) is an integrated circuit containing an array of linked, or coupled, capacitors. Under the control of an external circuit, each capacitor can transfer its electric charge to a neighboring capacitor. CCD sensors are a major technology used in digital imaging.
Answer:
A charge-coupled device is an integrated circuit containing an array of linked, or coupled, capacitors. Under the control of an external circuit, each capacitor can transfer its electric charge to a neighboring capacitor. CCD sensors are a major technology used in digital imaging.
Explanation:
1. A rectangular fish tank measures 1.5 meters by 2 meters by 20 cm. When it is filled with water, how many kilograms will the water in the tank weigh?
How many sheets of plywood would you need to cover a floor that has the Dimensions 16’x36’? (remember a sheet of plywood is 4’x8’)
Answer:
12 I guess.................
what is the best off rode car I think jeep wrangler
Answer:
Ford Raptor
Explanation:
Answer:
you can't spell Btw but anyways i this its any type of jeep
Explanation:
Why is drowsy driving dangerous?
Answer:
you could crash a die
Explanation:
Answer:
Well.
Explanation:
To put it simply, it's basically like driving drunk, you have a difficult time concetrating.
And like drunk driving, you could crash, and die.
(Or kill someone else).
giving free brainlist first 1
Hi! Hope you're having a great day!
Can I have brainlist?? :D
Dr. Ronny wants to measure small distances. Which device should he use?
A.
altimeter
B.
laser micrometer
C.
piezoelectric gauge
D.
thermometer
E.
dialyzer
Answer:
the answer is B ;)
Explanation:
The images below are an example of what? Black and White Images Orthographic Images Isometric Images O 3D Images
Answer: Orthographic images.
The front, top and side views are shown; therefore, these images are orthographic images.
What does the term poggers mean? Who was the guy who created the poggers face? How did the poggers face become so wide spread?
Answer:
The word “poggers” is used to express excitement during a game when something exciting occurs.
Explanation: Poggers guy is literally god
Answer:
play of the game
Explanation:
its used as an expression of excitement
Which of the following statements shows the mind of a "fool" when it comes to credit cards
Answer:
1. You get six credit card offers in the mail, and are stoked! You get all the cards.
2. You find a radical website that promises you the cheapest credit cards for students, and believe everything you read on the site.
3. You decide to get your first credit card from an online bank with no local office.
4. You get a credit card without checking how long the "grace period" is.
Explanation:
A person who's easily hoaxed when it comes to getting credit cards shows the mind of a fool. It is very important to be skeptical when getting one or more because credit cards are not all fun and games, but a huge responsibility.
1. Getting six credit cards offer in the mail doesn't necessarily mean you have to get all of them. You need to know which ones have low interest rates and which ones are suitable for you. You also have to know the fees.
2. You don't need to believe everything that is written on internet websites immediately. You have to do more research about the credit card they're offering whether they're actually telling the truth because sometimes, it's just a promotional strategy so people will get one.
3. It is important to get your first credit card from an online bank with a local office. Having a local office makes the company legit. It is also easier to file any complaints about your card through the local office.
4. Checking the "grace period" is important, so you'd know when you're going to pay your credit card dues. It will help you prevent getting charge with overdue fees.
Match each context to the type of the law that is most suitable for it.
Boyle’s Law
Charles’ Law
Pascal’s Law
(Match them to the context it goes to)
At constant temperature, the volume of a confined gas is inversely proportional to the pressure to which it is subjected.
A change in pressure at an point in an enclosed fluid at rest is transmitted un diminished to all points in the fluid.
At constant pressure, the volume of a confined gas is directly proportional to the absolute temperature.
At constant temperature, the volume of a confined gas is inversely proportional to the pressure to which it is subjected.
Charles’ LawAt constant pressure, the volume of a confined gas is directly proportional to the absolute temperature.
Pascal’s LawA change in pressure at an point in an enclosed fluid at rest is transmitted undiminished to all points in the fluid.
Further explanationCharles’ LawWhen the gas pressure is kept constant, the gas volume is proportional to the temperature
[tex]\tt \dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}[/tex]
Boyle’s LawAt a constant temperature, the gas volume is inversely proportional to the pressure applied
[tex]\tt P_1.V_1=P_2.V_2[/tex]
Pascal’s LawThe pressure exerted by the liquid in a closed space is continued in all directions equally
[tex]\tt P_1=P_2\\\\\dfrac{F_1}{A_1}=\dfrac{F_2}{A_2}[/tex]