The motor feeder conductor size for the described system would be 4 AWG aluminum THHN rated for a 75-degree C temperature.
The total horsepower for the three-phase motors is 45 hp and the total horsepower for the single-phase motors is 4 hp. The total horsepower is then 49 hp.
The next step is to calculate the load in amps as follows:
(49 hp x 746 watts)/(208 volts x 1.25 efficiency factor)
= 177 amps.
With 177 amps as the total load, the next step is to select the conductor size using the NEC Table 310.16. A 4 AWG aluminum THHN conductor is rated for a maximum of 195 amps.
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What is geotechical investigation?
A geotechnical investigation is primarily concerned with testing the physical properties of the soil, to provide recommendations for foundation requirements, excavation stability, drainage and buried concrete design.
Answer:
Geotechnical investigation is: A surface exploration and subsurface exploration of a site.
Explanation:
What does Geotechnical investigation mean?
It's a primarily concerned with testing the physical properties of the soil, to provide recommendations for foundation requirements, excavation stability, drainage and buried concrete design.
Why Geotechnical is important?
It allow's Engineers to evaluate the stability and strength of the ground, including slopes and soil deposits, assess risks such as soil aggressivity to buried concrete, and help to determine what type of foundations and earthworks would be required within a (project) for example.
In a single-family residence, a line-voltage thermostat is primarily used to control _____.
Answer:
In a single-family residence, a line-voltage thermostat is primarily used to control heating and cooling systems.
how does learning about the brain and nervous system contribute to your own Self and Social Awareness?
Learning about the brain and nervous system can contribute to self and social awareness in several ways.
First, understanding how the brain and nervous system function can help you to better understand your own thoughts, feelings, and behaviors. For example, if you learn about the role of certain brain regions in emotion regulation, you may be better able to recognize when you are feeling overwhelmed or stressed and take steps to manage those emotions.
Second, learning about the brain and nervous system can also help you to better understand the thoughts, feelings, and behaviors of others. For example, if you understand how the brain processes social information and influences social behavior, you may be better able to recognize when someone is feeling stressed or upset and respond in a more empathetic and supportive way.
To conclude, learning about the brain and nervous system can help you to develop a greater sense of self-awareness and empathy, which can in turn improve your relationships with others and enhance your overall sense of well-being.
Hope This Helps You!
Type I motor units could best be described by which of the following in comparison to type II motor units
In comparison to type II motor units, type I motor units could best be described as B: "Type I motor units are recruited first."
Type I or type S (slow) is a slow twitch, a fatigue-resistant unit with the smallest force or twitch tension and slowest contraction. Type I motor unit contains oxidative enzymes. On the other hand, type II or type FR (fast, resistant) is a fast twitch, a fatigue-resistant unit with larger forces and faster contraction times. Type II contains oxidative and glycolytic enzymes.
In a comparison of both type I and type II motor units, type I motor units are found to be recruited first.
"
The complete question:
Type I motor units could best be described by which of the following in comparison to type II motor units
a. Type I motor units are faster than type II.
b. Type I motor units are recruited first.
c. Type I motor units are recruited after type II.
d. Type I motor units are larger than type II.
"
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5 . Which of the following is true about vehicles displaying a diamond-shaped sign that indicates a hazardous load
The following is true about vehicles displaying a diamond-shaped sign that indicates a hazardous load:
They must stop before a cross railroad track.
What is hazardous load?A hazardous load is any load determined by the Minister to be capable of posing a risk to health, safety, or property when transported on a public road. A hazardous load is defined as any load that has been prescribed by the Council in the Gazette as being capable of posing a risk to health, safety, and property when transported along the Regional Trunk Road Network.
A hazardous substance is any substance that is I listed, classified, or regulated in accordance with any environmental law; (ii) any petroleum product or by-product, asbestos-containing material, lead-based paint or plumbing, polychlorinated biphenyls, radioactive materials, or radon; or (iii) any other substance that is the subject of regulatory action by any governmental entity in accordance with any environmental law.
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A ? is a traditional tool used to align and mark vertical points from top to bottom.
Select one:
a. compass
b. plumb bob
c. protractor
d. ruler
Answer: B, plumb bob
Explanation:
A plumb bob's main job was to establish what is true (ie vertical and perpendicular to a surface,) as well as the secondary task of marking these points.
Compasses are mainly used to draw circles, protractors are used to measure angles, and rulers are used to measuring length.
A child accidentally runs into the street in front of an approaching vehicle. The vehicle is traveling at 40 mi/h. Assuming the road is level, at what distance must the driver first see the child to stop just in time? a) 153.7 ft b) 300.3 ft c) 318.8 ft d) 146.7 ft
Assuming the road is level, the driver must see the child at 300.3 ft to stop just in time. Hence, option C) is the correct answer.
What is the distance needed to stop?The distance travelled between the moment the body decides to stop a moving vehicle and the moment the vehicle comes to a complete stop is known as the stopping distance. The stopping distance, indicated by the letter d, is dependent on a number of variables, including as the road's surface and the driver's reflexes.
What is the frictional stopping distance?The distance the car travels before coming to a halt is known as the stopping distance. It is depending on the vehicle's speed as well as the amount of road-to-wheel friction.
Briefing:Deceleration rate is considered 11.2 ft/s²
a = 11.2 ft/s²
= 1^2/2 = (40 mi/h×5280 ft/1 mi×1 h/3600 s)²/22×11.2=240.07 ft
Stopping distance would be:
= 240.07+ 60.23 ft = 300.3 ft
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Why is it critical for the upper and lower end sections of an engine to work perfectly together
Answer:
It is critical for the upper and lower end sections of an engine to work perfectly together because they are responsible for converting fuel into motion, which is necessary for the engine to operate effectively.
The upper end section of an engine includes the cylinder head and valves, which are responsible for controlling the flow of fuel and air into the engine. The lower end section of an engine includes the crankshaft, connecting rod, and pistons, which are responsible for converting the fuel's energy into rotational motion.
If the upper and lower end sections of an engine are not working perfectly together, it can lead to a variety of problems, including reduced engine performance, reduced fuel efficiency, and increased emissions. It is therefore critical for the upper and lower end sections to be carefully designed and calibrated to work together seamlessly in order to ensure the optimal performance of the engine.
when using the route command at a command prompt, which entry indicates the default route?
Regardless of whether a default static route is set up, the "default-information originate" command is used to advertise a default route into OSPF.
Static routing is the practice of using a manually specified routing entry rather than information from traffic generated by dynamic routing. Although it isn't always the case, network administrators frequently manually configure static routes in addition to adding entries to a routing table. In contrast to dynamic routing, static routes have been fixed and remain the same despite network configuration changes. Static and dynamic routing are not mutually exclusive. A router often combines both dynamic routing and static routing to maximize routing efficiency and provide fall backs in the case that dynamic routing information cannot be transmitted. As a last-resort gateway or in stub networks, static routing may also be used.
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Which of the following statements explain the difference between a diesel electrician and a diesel mechanic?
Option A. A diesel electrician works on the electrical systems of diesel engines, while a diesel mechanic works on the mechanical systems of diesel engines.
This means that the electrician focuses on the wiring, electronics, and computer systems, while the mechanic focuses on the engine parts, fuel systems, and other components.Differences Between Diesel Electricians and Diesel MechanicsA diesel electrician focuses on the wiring, electronics, and computer systems of diesel engines, while a diesel mechanic is responsible for the engine parts, fuel systems, and other components.
The electrician is trained in the electrical systems of diesel engines, and is able to diagnose, troubleshoot and repair any electrical issues. The mechanic, on the other hand, is responsible for maintaining, troubleshooting, and repairing the mechanical systems of diesel engines. This includes the engine parts, fuel systems, and other components.Both positions require a specific set of skills, and both are necessary to ensure the efficient functioning of diesel engines.
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Problem 9.10. Which of the following sets of values is closest to iL(0), vC(0).
Problem 9.10. Which of the following sets of values is closest to the energy stored in the capacitor and inductor (in J) at t=0-
Problem 9.10. What is the value of Vmax (integer answer required) in Volts
Problem 9.10. Which of the following is closest to the expression for vc(t) in Volts
In the cicuit of Figure P9.10, suppose ui"(1) = 10 V, R= 10 Ω, C = 0.4 mF, L = 0.25 (a) Compure 0), vo) i(0), and i1(0*)
(b) Compute the energy stored in the inductor and the capacitor at t = 0
(c) Using only energy considerations, compute the maximum value of ), t> 0 (d) Find the analytical expression for vt), and verify the maximum value of v) computed in part (c)
The energy of the magnetic and electric fields that have been stored can differ. A completely charged capacitor is linked in series with an inductor.
A passive-terminal electric device called an inductor, often referred to as a coil, choke, or reactor, stores electricity in a magnetic field when electric current passes through it. An insulated string twisted into a coil is typically included in an inductor. A passive digital component called an inductor can store electrical energy in the form of magnetic electricity. In essence, it uses a conductor that has been twisted into a coil; as electricity enters the coil from left to right, this will produce a magnetic field that rotates counter clockwise. The energy of the magnetic and electric fields that have been stored can differ.
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The power supply of a 3phase induction motor is 40kw and the corresponding stator losses are 1.5kw. Calculate the total mechanical power developed below
Two different kinds of losses can happen in a three-phase induction motor. These losses are variable losses that are constant or fixed losses. Fixed or Constant Losses Consta.
Exactly how are stator losses determined?Stator losses, including as stator iron loss and stator copper loss, are financed in part by this power input. Rotor input is provided with the leftover power, or (input electrical power - stator losses). Thus, rotor input P2 equals Pin minus stator losses (stator copper loss and stator iron loss).
What are the induction motor's three-phase losses?Fixed losses, Copper losses, and stray losses are a few types of losses that can occur in three-phase induction motors. Core losses, bearing friction losses, brush friction losses (in wound rotor motors), and windage losses make up the majority of these losses.
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Which of the following ion is the largest in size?a K+ b Ca2+ c Cl- d S2-
The ionic radius of Ca²⁺ is 100 pm, K⁺ is 138 pm, Cl⁻ is 181 pm, and S²⁻ is 184 pm, therefore option d is the right choice.
The influence of an ion's nucleus on its electron cloud extends outward to a distance called the ionic radius.
When an atom loses or gains an electron, an ion is created. A cation is formed when an atom loses an electron, and an anion is formed when an atom gains an electron. The ionic radius is the furthest point away from the ion's nucleus that its outermost shell can extend.
A cation's atomic size will be lower than that of its parent atom. Compared to its parent atom, an anion is comparatively large. That's because the net effective nuclear charge gets drowned out by the repulsion between electrons caused by an atom gaining electrons.
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A force F having a magnitude of F = 165 N acts along the diagonal of the parallelepiped. Determine the moment of F about point A, using MA =rB x F and MA =rC x F.
Therefore, (-26.46i-52.92k) Nm is the answer to the presented problem of force.
What is a force, exactly?The definition of force in physics is: The push or pull on a massed object changes its velocity. An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude.
Which four primary forces are there?Any of the four fundamental forces in physics—gravitational, electromagnetic, strong, and weak—that control how things or particles interact as well as how some particles decay—is referred to as a fundamental force, also known as a fundamental interaction. These fundamental forces are the source of all known natural forces.
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true or false : an attempt to pass a non-variable argument into a reference variable parameter will cause an error.
Answer: true
Explanation:
The maximum load that a 0. 50 in. Diameter teel rod can upport if the normal tre in the rod mut not exceed 24,000 pi i lb. (preciion of 100)
The maximum load that a 0.50 inch diameter steel rod can support if the normal stress in the rod must not exceed 24,000 psi is 15,772 lb.
What is stress?
Stress in engineering is the amount of force that is applied to a material or structure. It is expressed in terms of pounds per square inch (psi) or megapascals (MPa). Stress can be caused by external forces such as gravity, wind, and temperature, as well as by internal forces such as tension, compression, and shear. When a material is stressed beyond its ability to contain the force, it will eventually fail. Engineers must consider a variety of factors when designing a structure or product to ensure that it can withstand the forces it will encounter in its intended environment. This includes understanding the properties of the materials being used, the effect of temperature and other environmental conditions, and the safety factors that must be applied to ensure the structure does not fail under extreme stress.
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A catapult has two rubber bands, each with a square cross-section with a width 4 mm and length 300 mm. In use its arms are stretched to three times their original length before release. Assume the the modulus of rubber is 10-3 GPa and that it does not change when the rubber is stretched. How much energy is stored in the catapult just before release?
The energy stored in the two rubber bands of the catapult just before release can be calculated as follows: Area of Rubber Bands = (4 mm) x (300 mm) = 1200 mm2, Modulus of Rubber = 10-3 GPa = 10,000 N/mm2 Strain = (3 x Original Length) / (Original Length) = Energy = (1200 mm2) x (10,000 N/mm2) x (3) = 36,000,000 Nmm or 36,000 J
What is energy?Energy is the capacity of a physical system to do work or produce heat. It is the fundamental source of virtually all movement and change on Earth. In physics, energy is a property of objects which can be transferred to other objects or converted into different forms. Examples of energy include light, electricity, heat, sound, and kinetic energy. Energy can be generated from a variety of sources including fossil fuels, nuclear power, and renewable sources such as wind, solar, and hydropower. Energy plays a crucial role in the economic and social development of societies, enabling the production of goods and services and the delivery of basic services such as heating, cooling, and lighting. The efficient and responsible use of energy is essential to sustainable development.
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which condition normally lowers the water table
Answer: Droughts, pumping effects, and rainfall variations affect the groundwater level height.
Explanation: If a well is pumped at a faster rate than the aquifer around it is recharged by precipitation or other underground flow, then water levels in the well can be lowered.
A rigid pavement on a new interstate with 3 lanes in each direction has been conservatively designed with a 12-inch slab, an Ec of 5.5 million psi, a concrete modulus of rupture of 700 psi, a load transfer coefficient of 3.0, an initial PSI of 4.5, and a TSI of 2.5. The overall standard deviation is 0.35, the modulus of subgrade reaction is 290 lb/in3, and the drainage coefficient is 0.9. The pavement was designed for 600 30-kip tandem axles per day and 1400 20-kip single axle loads per day total for all 3 lanes. If the desired reliability is 90%, how long will the pavement last in years
The pavement will last between 41 and 50 years with a reliability of 90%.
A road surface, also known as pavement, is a durable surface material that is laid down on an area intended to support vehicular or pedestrian traffic, such as a road or walkway.
First, calculate the number of equivalent single axle loads (ESALS):
ESALS = 600*30 + 1400*20 = 55600.
Next, calculate the design life (L) using the formula: L =
(ESALS/18000)^(1/TSI) * (Ec/PSI)^(-1/2*SD).
Plugging in the values,
L = (55600/18000)^(1/2.5) * (5.5 x 10^6/4.5)^(-1/0.7) = 41.8.
Lastly, calculate the reliability (R) using the formula:
R = (1-LT^(-1/2))*100.
Calculating for a pavement life of 41 years and 50 years gives a reliability of 90% for both values.
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Need help with Part 1 – Additional Operations I MATLAB question
gove it to me. I'll do my best
Tech A says that both caution and danger signs indicate a potentially hazardous situation. Tech B says that an exhaust extraction hose is not needed if the vehicle is only going to run for a few minutes. Who is correct
According to the question of vehicle which is only going to run for a few minutes, tech A is correct.
What is vehicle?
Vehicles are any mode of transportation that can be used on land, sea, or air. They are an important part of modern transportation and include cars, trucks, buses, motorcycles, boats, trains, and airplanes. They provide an efficient way to travel, while also allowing people to transport goods and materials. Vehicles are powered by a variety of sources, including gas and electricity. Advanced technology has allowed for the development of self-driving vehicles, which are becoming increasingly popular.
Caution and danger signs indicate a potentially hazardous situation, and an exhaust extraction hose should be used whenever a vehicle is running, regardless of how long it is running for.
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Which of the following is one way to manage the time invested in social media marketing?
a. Leverage tools like Hootsuite that are designed to improve efficiencies.
b. Hire an outside agency.
c. Only spend time on one social media site at a time.
d. Install times on employee computers to monitor time spent on social media.
e. None of these.
To determine whether the marketing campaign will add value to the business, the marketing agency should apply the Present Net Value formula.
A calculation known as the Present Net Value brings all of an investment's future cash flows to the present. The company must identify the revenue totally attributed to the marketing campaign in order to evaluate the campaign marketing strategy as a prospective investment. By doing this, the company will be able to determine the annual inflows (sales) that must be deducted from the outflows (marketing expenses). Every year's net value is discounted at a certain rate, and if the Present Net Value is more than 0, the marketing plan is anticipated to add value to the company. To determine whether the marketing campaign will add value to the business, the marketing agency should apply the Present Net Value formula.
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the the rectangular components of acceleration for a particle are ax = 3t and ay= (30-10t) where a is in m/ s^2 . if the particles start from rest at the origin. find the radius of curvature of the path at the instant 2 second
It is okay to speed 7-10 mph over the posted speed limit.
The police cannot write speeding tickets for that.
Answer:
it is okay depending on how u drive
Why is it so important that you need to know when calculate a bevel gear two (2) different numbers of gear teeth are to be know?
It is important to know the number of teeth on the two gears when calculating a bevel gear because the number of teeth determines the gear ratio, which in turn determines the torque and speed at which the gears will operate.
How to calculate the gear ratio?The gear ratio is calculated by dividing the number of teeth on the driving gear by the number of teeth on the driven gear.
If the number of teeth is not known, it would be impossible to accurately calculate the gear ratio and determine the performance of the gear set.
Additionally, the number of teeth also affects the meshing pattern and the contact ratio between gear teeth, which is also important to the gear's performance.
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raw sugar cane is taken into a process to create sugar, which is essentially sucrose. the raw cane is approximately 16% sucrose, 63% water, and the rest fiber by mass. juice from the cane is extracted by passing the cane through a series of crushers. about 5% extra mass of water is added to the sugar cane prior to this step to help in the extraction process. the crushed cane and liquid juice is sent to a filter press that creates a cake that contains 4% of the weight of the cane juice, which has a composition similar to the overall non-fiber content of the raw cane. the filtrate is sent to an evaporator where enough water is evaporated to obtain a pale yellow juice that is 41% water. a
The juice is then sent to a crystallizer where it is cooled and seeded with sugar crystals. The crystals grow in size and are separated from the liquid by centrifugation.
What is a crystallizer?Crystallizer is a type of signal-processing technology most commonly used in audio production. It is designed to add clarity and definition to audio signals by emphasizing the frequencies which are most important to the signal. It works by amplifying the signal in the frequency domain and adding a process of resonance so that certain frequencies are emphasized, giving a more defined sound. Crystallizer is particularly useful in mastering, where it can bring out details and clarity that would otherwise be lost. It can also be used to enhance percussion instruments, making them more present in a mix.
The crystals are then dried and screened to obtain the desired size of sugar crystals. The remaining liquid is sent to a vacuum pan where it is boiled and evaporated until it reaches a concentration of 65% sucrose. The syrup is then cooled and crystallized to obtain the final product, which is refined sugar.
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The statements below refer to the design and operation of the power sub-system on a spacecraft. Select all those statements that are correct.
Partial credit is available for each correct answer. Select only those statements you know to be correct because negative marking is applied
within this question (although it is not possible to get a negative mark for the question overall).
Radioisotope Thermoelectric Generators (RTGS) are commonly applied to earth-orbiting spacecraft to provide power for the eclipse periodwhen the solar panels are ineffective.
Jupiter is considered the approximate limit for solar-powered orbital missions; missions to planets beyond this will require Radioisotope
Thermoelectric Generators (RTGS).
When sizing solar arrays, the area required typically has to be factored up as the temperature decreases because the cells operate less
efficiently when cold.
A spacecraft designed to operate in orbit at Mars will require generally require significantly smaller solar arays than one designed for
operation at Earth.
When sizing solar arrays, the area required must be factored up to allow for the array efficiency to decrease with time due to degradation.
When sizing solar arrays, the area required typically has to be factored up as the temperature increases because the cells operate less
efficiently when warm.
Radioisotope Thermoelectric Generators (RTGS) have many moving parts, which limits their reliability for long-duration missions.
For a spacecraft in planetary orbit, power for the eclipse period is commonly provided by a battery as a secondary power source, and an
increased solar array area to give extra power to charge the batteries whilst not in eclipse.
The statements below that refer to the design and operation of the power sub-system on a spacecraft is option
Radioisotope Thermoelectric Generators (RTGS) are commonly applied to earth-orbiting spacecraft to provide power for the eclipse period when the solar panels are ineffective.Jupiter is considered the approximate limit for solar-powered orbital missions; missions to planets beyond this will require Radioisotope Thermoelectric Generators (RTGS).A spacecraft designed to operate in orbit at Mars will require generally require significantly smaller solar arrays than one designed for operation at Earth. This is because Mars is farther from the sun than Earth, so it receives less sunlight. A smaller solar array is needed to generate the same amount of power as a larger array would at Earth because of the decreased amount of sunlight.When sizing solar arrays, the area required must be factored up to allow for the array efficiency to decrease with time due to degradation.7. For a spacecraft in planetary orbit, power for the eclipse period is commonly provided by a battery as a secondary power source, and an increased solar array area to give extra power to charge the batteries whilst not in eclipse.
Why is the above statement correct?Radioisotope Thermoelectric Generators (RTGS) are commonly applied to earth-orbiting spacecraft to provide power for the eclipse period when the solar panels are ineffective.
This is because RTGS use the heat generated by the decay of a radioactive material to generate electricity, which allows them to continue to produce power even when the solar panels are not receiving sunlight.
Therefore, Jupiter is considered the approximate limit for solar-powered orbital missions; missions to planets beyond this will require Radioisotope Thermoelectric Generators (RTGS). This is because as you move farther away from the sun, the amount of sunlight received by the solar panels decreases, making it difficult to generate enough power to operate the spacecraft. RTGS are a more reliable power source for missions to these outer planets because they do not rely on sunlight to generate power.
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A set of steel reinforcing rods is to be stretched axially in tension to create a tensile stress of 30 ksi prior to being cast in concrete to form a beam. Determine how much force will be required to stretch them the required amount and how much deflection is required. There are 10 rods; each is 0. 75-in diameter and 30 ft long
According to the question of tensile stress, 5.66 kips is required to stretch them the required amount and 0.0015 in deflection is require.
What is tensile stress?
Tensile stress is a physical force exerted on a material in opposing directions along its length. It is a measure of the amount of force necessary to pull a material apart, or to cause a fracture. Tensile stress occurs when a material is placed under load and the load is applied in a way that causes the material to elongate. When a material is subjected to tensile stress, the molecules of the material become stretched and the material's shape is changed.
The required force is calculated by multiplying the area of the rod by the desired stress:
F = A * σ = π/4 * (0.75 in)^2 * 30 ksi = 5.66 kips
The required deflection is determined by multiplying the required force by the length of the rod and then dividing by the modulus of elasticity (E) and the area of the rod:
δ = FL/EA = 5.66 kips * 30 ft / (30,000 ksi * π/4 * (0.75 in)2) = 0.0015 in
Therefore, the required force is 5.66 kips and the required deflection is 0.0015 in.
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Verify that the indicated function y=ϕ(x)y=ϕ(x)
is an explicit solution of the given first-order differential
equation. By considering ϕϕ simply as a function, give its domain. Then by considering ϕϕ as a
solution of the differential equation, give at least one interval II of definition.
y′=25+y2;y=5tan5xy ′ =25+y 2 ;y=5tan5x
After considering ϕϕ simply as a function, its domain is ⇒ [-4 , ∞).
What is differential equation?When one or more functions and their derivatives are included in a mathematical equation, it is referred to as a differential equation. A function's derivatives at a given point determine how quickly the function will change.
Physicists, engineers, and biologists use it most frequently. Differential equations are primarily used to analyse solutions that satisfy the equations as well as the characteristics of the solutions. The differential equation can be solved in a variety of ways, but one of the simplest is by using explicit formulas.
y = x + 6√(x + 4)
⇒ y' = 1 + 6[ 1/(2√(x + 4))] since d/dx xn = nxn-1 , d/dx √x = 1/(2√x)
⇒ y' = 1 + 3/√(x + 4)
(y -x)y' = (6√(x + 4))(1 + 3/√(x + 4)) = 6√(x + 4) + 18
y-x+18 = 6√(x + 4) + 18
ϕ(x) = x + 6√(x + 4)
Domain ⇒ x + 4 >= 0 ⇒ x >= -4
⇒ Domain ⇒ [-4 , ∞)
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distinguish between the cis-acting regulatory elements referred to as promoters and enhancers.
Answer: ones on white chocolate and ones on a birthday cake
Explanation: