The Given Data were properly outline and the relation for the quantity of heated at equilibrium was used to compute the temperature as 18.84°C
Heat CapacityGiven Data
Mass of Copper m1 = 300g = 0.3kgSpecific heat of copper c1 = 490Kg KInitial Temperature of Copper T1= 150°CMass of water m2 = 4kgSpecific heat of water = 42180 Kg KInitial Temperature of water T1= 20°CAt equilibrium, the final temperature of the system T2 will be same for both copper and water
McΔT(copper) = McΔT(water)
0.3*490*(T2 - 150) = 4*4180*(T2-20)
147*(T2 - 150) =16720*(T2-20)
147T2 - 22050 = 16720T2 - 334400
collect like terms
147T2 -16720T2 = - 334400+22050
147T2 -16720T2 = - 334400+22050
-16573T2 = -312350
16573T2 = 312350
Divide both sides by 16573
T2 = 312350/16573
T2 = 18.84°C
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Calculate the acceleration of a 2000kg single engine airlane just before take off when the thrust of the engine is 500n?
Answer:
0.25 m/s²
Explanation:
The steel bracket is used to connect the ends of two cables. if the allowable normal stress for the steel is sallow = 30 ksi, determine the largest tensile force p that can be applied to the cables. assume the bracket is a rod having a diameter of 1.5 in.
The largest tensile force that can be applied to the cables given a rod with diameter 1.5 is 2013.15lb
The static equilibrium is given as:
F = P (Normal force)
Formula for moment at section
M = P(4 + 1.5/2)
= 4.75p
Solve for the cross sectional area
Area = [tex]\frac{\pi d^{2} }{4}[/tex]
d = 1.5
[tex]\frac{\pi *1.5^{2} }{4}[/tex]
= 1.767 inches²
Solve for inertia
[tex]\frac{\pi *0.75^4}{4}[/tex]
= 0.2485inches⁴
Solve for the tensile force from here
[tex]\frac{F}{A} +\frac{Mc}{I}[/tex]
30x10³ = [tex]\frac{P}{1.767} +\frac{4.75p*0.75}{0.2485} \\\\[/tex]
30000 = 14.902 p
divide through by 14.902
2013.15 = P
The largest tensile force that can be applied to the cables given a rod with diameter 1.5 is 2013.15lb
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In surveying , supposing we can not pull the tape because it is passing through a shallow river. What will i do to obtain an accurate distance?
Answer:
Hold the tape in place and go down to the end.
Explanation:
Omar owns a stall selling handmade cosmetics, and wants to launch an e-commerce site. He has lots of experience selling his products in person at markets, but is now hoping to reach more customers online.
Can you advise Omar on how to make both his online and offline business successful?
Answer:
He could put up advertisements all over the town and pay a few websites or search engines to have his company and ads be more common. He should also use some designs and make his company's sign very adequate.
on to Hand Tools - Scored Items
Item 11 of 25
When working above the when working above the ground, what should be used to connect all tools to prevent injury to others or damage to the work below?
A lanyard should be used to connect all tools to prevent injury to others or damage to the work below when working above the ground.
What is OSHA?OSHA is an abbreviation for occupational safety and health administration and it is an agency of the federal government that is saddled with the following responsibilities:
Assuring and ensuring safe and healthy working conditions for workers.Setting and enforcing standards, rules, and laws.According to the Occupational Safety and Health Administration (OSHA), a lanyard should be used by workers to connect all tools, so as to prevent injury to other workers or even a damage to the work below, especially when working above the ground.
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Which part of the electromagnetic spectrum is used in televisiions
Answer:
Television's use 2 portions of the electromagnet spectrum and that is Visible light and radio waves.
Explanation:
Visible light helps us see the picture on the television and radio waves are used to send pictures to television's screen.
In approximately 50 words, describe one thing a professional in an increased demand green construction occupation could do to add to the function, sustainability, and energy efficiency of the construction of a shopping center.
answer:Numbers of green increased demand occupations are growing and include power system operators and dispatchers. There are many green enhanced skill occupations which are being changed; some examples include continuous mining machine operators, electrical engineers, geological sample test technicians, mechanical engineers, and power plant operators, who are all receiving new tasks related to renewable energy generation
The things that the professional in an increased demand green construction occupation can add in the construction of a shopping center include:
Radiant floors.Solar power.Great water recycling.What is a green buidling?It should be noted that a green building simply means a design, construction, or operation that eliminates the negative impact on the climate and natural environment.
In this case, in order to illustrate energy efficiency, it's important to use radiant floors, geothermal system, energy efficient window systems, etc.
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During the design of spherical pressure vessel for space programs, a primary criterion is the mass of the vessel (which determines how much it costs to put it into the orbit). Given the stress in a thin walled spherical vessel is tensile and given by:
Tensile stress in a thin wall spherical shell is given by
σ = ( p r ) /2t
Tensile stressThis is the type of stress that involves pulling out. it is the opposite of compressive stress.
The tensile stress, σ at the circumference of the shell is the hoop stress. The value equals that of pressure acting on the area.
Therefore:
σ * 2πr * t = p * πr^2
where
2πr = circumference of a circle
πr^2 = area of a circle
p = internal pressure
t = thickness
σ * 2πr * t = p * πr^2
σ = ( p r ) /2t
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Might a synchronous motor equally well be called a synchronous inductor
In Engineering, a synchronous motor is sometimes referred to as synchronous capacitor but not a synchronous inductor.
What is a synchronous motor?A synchronous motor can be defined as an alternating current (AC) electric motor in which the rotation speed of the shaft is directly proportional to the frequency of the supply current, especially at steady state.
Basically, a synchronous motor is sometimes referred to as a synchronous capacitor because it can be used to correct the power factor (PF) of a lagging load such as an induction motor.
However, a synchronous motor cannot be called a synchronous inductor because the rotation speed of the shaft is not proportional to the synchronous speed of the motor. Thus, they are called an synchronous motor.
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A transistor with a height of 0.4 cm and a diameter of 0.6 cm is mounted on a circuit board. The transistor is cooled by air flowing over it with an average heat transfer coefficient of 30 W/m2°C air = 30°C If the air temperature is 55°C and the transistor case temperature is not to exceed 70°C, determine the amount of power this transistor can dissipate safely. Disregard any heat transfer from the transistor base.
The minimum safety power that is safely dissipated using a transistor of height 0.4cm and diameter 0.06cm is 0.04665
Calculation for the exposed area[tex]\pi DL +\frac{\pi }{4} D^2\\\\Area = 3.14 * 0.6*0.4+\frac{3.14}{4} *0.6^2[/tex]
D = diameter = 0.6cm
Length = height = 0.4cm
Area = 1.0367cm²
minimum safety heat that is dissipatedhA (Ts - Tair)
30 * 1.0367 x 10⁻⁴(70-55)
= 0.04665
The minimum safety power that is safely dissipated is 0.04665W
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Construction engineering does not have much to do with design.
True
False
A conductive loop on the x-y plane is bounded by rho = 2.0 cm, rho = 6.0 cm, φ = 0º and φ = 90º. 2.0 a of current flows in the loop, going in the aφ direction on the rho = 2.0 cm arm. determine h at the origin
select one:
a. 8.4 az (a/m)
b. 4.2 ay (a/m)
c. 8.4 ax (a/m)
d. 4.2 az (a/m)
Answer:
b. 4.2 az (A/m)
Explanation:
b is the answer
Q6. Ask for two numbers. If the first one is larger than the second, display the second number first and then the first number, otherwise show the first number first and then the second.
Answer:
Number1 = input("Choose a number: )
Number2 = input("Choose a second number: )
if number1 > number2:
print(number2\nnumber1)
else:
print(number1\nnumber2)
Explanation:
I'm assuming that you want it in python.
explain the working principles of a rotary engine
Answer:
The rotary engine works on the same basic principle as the piston engine: combustion in the power plant releases energy to power the vehicle. However, the delivery system in the rotary engine is wholly unique. The piston engine performs four key operations: intake, compression, combustion, and exhaust.
Explanation:
Darron loves his career because it mostly fits in with his lifestyle. He likes how he is able to make a lot of money and
stay very busy while at work. He also likes that he travels a lot and gets to see new places. He thinks that one of the
reasons he is successful is that he enjoys the competition in his career that some people would find stressful.
However, he wishes he had more time at home with his family.
Which aspect of Darron's career matches his lifestyle but is also in conflict with some of his desires?
® busyness while at work
® earning money
O frequent travel
© strong competition
Answer:
A
Explanation:
He says he loves work, but wants more time with his family, so this is in conflict with some of his other desires.
Grapes, sour
Red, elbow
what is you're question :)
Answer:
Explanation:
what is the question
state 5 general rules for cleat wiring
Give two disadvantages of a moving coil Meter
The sounds heard during the first phase of blood-pressure measurement are called.
The sounds heard during the first phase of blood-pressure measurement are called the Korotkoff sounds.
What sounds are heard during blood pressure?The kind of sound that is bern heard during blood pressure is Korotkoff sounds which are produced underneath the distal half of the blood pressure cuff.
The sounds can be noticed when cuff pressures are between systolic and diastolic blood pressure.
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What is the difference between aerospace and aeronautical engineering
Answer:
Aerospace engineering is a broader subject that includes both aircraft and spacecraft studies. Aeronautical engineering focuses more on aircraft design and construction that flies within the Earth's atmosphere.
Explanation:
Aerospace engineering is a vast topic that involves research on both airplanes and spacecraft, further explained in the following paragraph.
Which profession pays better Aerospace or aeronautical engineering?The median annual pay for aerospace engineers is $116,500, according to the US Bureau of Labor Statistics. Aerospace engineers, on the other hand, make $56.01 per hour. According to Glassdoor, the national average compensation for an Aeronautical Engineer in the United States is $80,000.
Aerospace engineering is a vast topic that involves research on both airplanes and spacecraft. Aeronautical engineering is concerned with the design and building of aircraft that fly within the atmosphere.
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In-------process the hot drawn bar or rod is pulled through the die.
Answer:
Explanation:
he metallic rod is fixed into the dies by using a die holder and then a drawing head is used in which the metallic rod is fixed through a jaw mechanism. And then the bar is stretched and slides between the surfaces of the die
What is the purpose of networking?
Answer:
The purpose of networking is to make new friends, industry acquaintances, and even business partners.
10 tasks and 5 exercises. How many ways are there to build the test?
To find how many ways, you must simply multiply 10 tasks and 5 exercises
Ways: = 10 * 5 = 50 ways
Hope that helps!
Joe maylan an employee of acme company has been sent to do some work in the highland company's main lobby. This job will take two days. Which type of pass should joe be given?
The type of Pass that Joe Maylan should be given is called; Temporary Pass
What is temporary pass?In factories or industries, there are different types of pass given to workers and visitors visit such places on a daily basis. In this case Joe maylan is going to do a job in the company for just 2 days and as such the type of pass he willl get will be a temporary pass.
It will be a temporary pass because it is a document pass issued for short-term use or due to an emergency.
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Pouring molten aluminum into a mold and allowing it to cool forms:
A)
a stamped part.
B)
a cast part.
C)
an extruded part.
D)
a hydroformed part.
Hi :)
The answer is B. A cast part
How does a cast part form?
Molten material is then poured into a mould cavity that takes the form of the finished part. The molten material then cools, with heat generally until it solidifies into the desired shape.
Hope this helps!
Give the other person brainliest, they answered first
Hope this helps!
~NatLikesAnime~
#LearningWithBrainly.
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A glass of water with a mass of 0.45kg at 20∘C is to be cooled to 0∘C by dropping ice cubes at 0∘C into it. The latent heat of fusion of ice is 334kJ/kg, and the specific heat of water is 4.18kJ/kg⋅∘C. The amount of ice that needs to be added is.
By using the concept of heat transfer, we need to add 0.045kg or 45g of ice to the glass of water to cool it from 20∘C to 0∘C.
The heat lost by the water is equal to the heat gained by the ice cubes. We can use the following equation to calculate the heat transfer:
Q = m_w * c_w * ΔT + m_i * L_f
where Q is the heat transfer, m_w is the mass of water, c_w is the specific heat of water, ΔT is the temperature change (20-0 = 20∘C), m_i is the mass of ice, and L_f is the latent heat of fusion of ice.
We know the values of m_w (0.45kg), c_w (4.18kJ/kg⋅∘C), ΔT (20∘C), and L_f (334kJ/kg). We can rearrange the equation to solve for m_i:
m_i = (Q - m_w * c_w * ΔT) / L_f
Substituting the values, we get:
m_i = [(0.45kg) * (4.18kJ/kg⋅∘C) * (20∘C) - 0] / (334kJ/kg
m_i = 0.045kg
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Damage reports should contain the information needed for what?
Answer:
it's damage kindly be carefulExplain what a structural engineer does?
Explanation:
Structural Engineers create drawings and specifications, perform calculations, review the work of other engineers, write reports and evaluations, and observe construction sites. A Professional Engineer's license is required in order to practice Structural Engineering.
Based on your understanding of color’s relationship to wavelength, identify the approximate wavelength of light (nm) emitted by strontium when it was burned in Part C. (No quantitative data was collected for this; you are giving an approximate value only, based on what you observed. ) Strontium emission = _________________nm
Explain your reasoning in full, making sure to cite specific data and observations to support your answer.
Q. 5 What would you conclude about chloride based on your results in the flame tests in Part C?
Q. 6 Place the metal solutions you tested in order of increasing energy based on the colors observed in the flame test; i. E. , A < B < C
The approximate emmission of Crimson is 620 to 700 nm
We would have to identify the wavelength that are emitted by the strontium.
In the strontium test, the observations would be based on the flames that are crimson red.
In the color wheel, the color with the highest wavelength is red at 620 to 700 mm.
3. The original color that is present in the test comes from when metal salt is heated. This usually causes its outer electrons to be excited, falling back to different energy wavelength in the spectrum.
Higher wavelength = loosely bound electron in the outer shell so that less energy is required.
The metals are red when they are burnt. The red color is the one with the highest wave length.
What is a wavelength?This is defined as the existing distance that is found between waveds. These could be sound or electromagnetic waves.
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Steering and suspension question
Answer:
I would say only A
Explanation:
steering dampeners are applied to heavy-duty and off-road vehicles in order to help stabilize and balance out your steering in rough terrain. luxury cars won't have them because, well, they are cars, and cars are not used for off-roading. trucks and SUVs and sometimes vans are though, which makes sense more than just a random luxury car with dampeners just sitting there for no reason at all when heavy-duty vehicles need them more than the car.