A technician is a worker in the technology industry who possesses the necessary knowledge, abilities, and skills as well as a practical comprehension of the theoretical underpinnings.
Who is technician?Expert technicians in a certain tool domain often have expert competency in technique and a moderate comprehension of theory.
As a result, technicians in that sector of technology are typically significantly more knowledgeable about technique than the average layperson and even general professionals.
For instance, although not as knowledgeable in acoustics as acoustical engineers, audio technicians are more adept at using sound equipment and are likely to know more about acoustics than other studio staff members, such as performers.
Therefore, A technician is a worker in the technology industry who possesses the necessary knowledge, abilities, and skills as well as a practical comprehension of the theoretical underpinnings.
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2. explain how a pulse-width modulation signal controls the speed of a motor when applied to an h-bridge.
You apply a Pulse Width Modulation (PWM) signal to the Enable line to regulate the motor's speed. The motor will operate more slowly the narrower the pulse width.
How does PWM impact the speed of the motor?The motor will run at a speed that is halfway between zero and full speed if the electricity is turned on and off quickly enough. A p.w.m. controller turns on the motor by pulse-by-pulse, and this is exactly what it does. Pulse Width Modulation is the term for the process of varying (modulating) the pulse width in order to control the motor speed.The power supply is quickly turned on and off by a PWM signal to drive a motor. In most cases, this can be accomplished by delivering a PWM signal to a transistor, which will then alter the device's power source. The motor speed can be adjusted by adjusting the PWM signal's pulsewidth.To learn more about PWM signal refer to:
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a combinational logic circuit has two inputs. the values of those two inputs during the past ten cycles were 01, 10, 11, 01, 10, 11, 01, 10, 11, and 01. the values of these two inputs during the current cycle are 10. explain the effect on the current output due to the values of the inputs during the previous ten cycles
A circuit that uses combinational logic has outputs that only depend on the inputs' current states. Each output, in mathematical words, is a function of the inputs.
From the specifications, determine the minimum and maximum input and output quantities. Using their connections to the input, determine the truth table for each of the outputs. For each output, simplify the boolean expression. Use Boolean algebra or Karnaugh maps. A complete adder, which accepts two binary digits as input and outputs a sum bit and a carry bit, is an illustration of a combinational circuit. Many digital devices, such as computers and calculators, employ full adders. A multiplexer is yet another illustration of a combinational circuit.
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In your own understanding, what is an air dispersion model?
Answer:
Dispersion modeling uses mathematical formulations to characterize the atmospheric processes that disperse a pollutant emitted by a source. Based on emissions and meteorological inputs, a dispersion model can be used to predict concentrations at selected downwind receptor locations
Explanation:
In a series circuit with two identical loads the voltage across each load will be.
In a series connection with identical loads, the voltage would be the same throughout each demand.
When all of the loads are linked in a row, the circuit is said to be in series. One route alone can carry electricity. The left lights in this circuit would be out if one of the flashbulbs were missing. The voltage across the circuit in a series connection is the sum of the individual voltage drops across each component, while the current flows at a constant rate. A series circuit has a voltage equal to the sum of all individual voltage drops. In a series circuit, the voltage across the circuit and the current flowing through each component are both the same.
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the first solid phase that form upon cooling of a hypoeutectoid steel (not hypereutectiod) from an austenite phase is called .
The first solid phase that form upon cooling of a hypoeutectoid steel from an austenite phase is called proeutectoid ferrite.
What is proeutectoid ferrite ?When the carbon content of steels is lower than the composition of eutectoid, proeutectoid ferrite may occur (hypoeutectoid steels).Similar to this, proeutectoid cementite commonly develops in steels when the carbon content exceeds that of the eutectoid composition (hypereutectoid steels) A phase that develops below eutectoid composition is proeutectoid ferrite.Ferrite that forms above the lower critical temperature, or the A1 line, in the Iron-Carbon phase diagram is referred to as pro-eutectoid ferrite, while cementite that forms above the eutectoid temperature is referred to as pro-eutectoid cementite. Pro-eutectoid ferrite (see Proeutectoid Ferrite) is created as the steel cools to the eutectoid temperature when steels with less than the eutectoid carbon content are slowly chilled from the austenitizing temperature.To learn more about proeutectoid ferrite refer
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what kind of operations can you implement using rc (resistor-capacitor) circuits? a. low pass b. lead filter c. lag filter d. all of the above.
the correct option is (d) all of the above
An electric circuit made up of resistors and capacitors is known as a resistor-capacitor circuit (RC circuit), RC filter, or RC network. It could be driven by a source of voltage or current, and each will result in a different response. A first order RC circuit is composed of one resistor and one capacitor and is the simplest type of RC circuit.RC circuits can be used to filter a signal by blocking certain frequencies and passing others. The two most common RC filters are the high-pass filters and low-pass filters; band-pass filters and band-stop filters usually require RLC filters, though crude ones can be made with RC filters.
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1. A well-insulated rigid tank contains 3 kg of a saturated liquid-vapor mixture of water at 200 kPa. Initially, three-quarters of the mass is in the liquid phase. An electric resistance heater placed in the tank is now turned on and kept on until all the liquid in the tank is vaporized. Determine the entropy change of the steam during this process
Answer:
a
Explanation:
within the mixing zone and thermocline, average temperature and salinity primarily . a. increase with depth. b. remains constant within the mixing zone, but increases within the thermocline. c. remain fairly constant with depth. d. decrease with depth.
Within the mixing zone and thermocline, average temperature and salinity primarily decrease with depth. Thus, option D 'decrease with depth' is the correct answer.
Both the mixing zone and thermocline differ from each other based on temperature. The mixed zone is near the surface where the temperature is roughly that of surface water. While, in the thermocline, the temperature decreases rapidly from the mixed zone temperature to the much colder deep water temperature. Within the thermocline and mixing zone, average temperature and salinity generally decrease with depth.
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What is the rated power output in kw of a 8-pole motor designed to an iec 180l motor frame? (type in an integer. ).
Answer:
Explanation:
P=11 kW
Explanation:
Given that
Number of poles= 8
I.E.C. 180L motor frame
From data book , for 8 poles motor at 50 Hz
Speed = 730 rpm
Power factor = 0.75
Efficiency at 100 % load= 89.3 %
Efficiency at 50 % load= 89.1 %
Output power = 11 kW
Therefore the rated output power of 8 poles motor will be 11 kW. Thus the answer will be 11 kW.
P=11 kW
Select all that are true. Group of answer choices in a dc motor, induced or back emf results from magnetic force exerted by stator on the charges in the rotor. Back emf is the useful energy output as a result of the interaction between the rotor and the stator of a motor. A dc motor draws a current i. The internal resistance of the motor is r. If v is the voltage applied at the terminals of the motor, back emf epsilon is the difference of v and i r. A dc generator has the same major parts as a dc motor, i. E. Stator, rotor, commutator, and brushes. A dc generator converts mechanical energy into electrical energy; whereas a dc motor converts electrical energy into mechanical energy. The purpose of brushes in a dc motor or generator is to keep the commutator clean of any dirt or foreign objects.
The statements provided in options A, C, D, and E are correct in relation to a DC motor.
DC motor is an electronic machine that transforms electrical energy into mechanical energy. DC motor functions using direct current. In the context of the DC motor, true statements are given below:
In a DC motor, back or induced emf results from the magnetic force applied by the stator on the charges in the rotor. A DC motor draws a current 'i'. The internal resistance of the DC motor is 'r'. If 'v' is the voltage exerted at the terminals of the motor, back emf epsilon is the difference between 'v' and 'i' 'r'. A DC generator has the same core parts as a DC motor, i.e. rotor, stator, brushes, and commutator. A DC motor converts electrical energy into mechanical energy, and a DC generator converts mechanical energy into electrical energy.However, the following statements are not correct in terms of a DC motor.
Back emf is the useful energy output as a result of the interaction between the stator and the rotor of a motor.The purpose of brushes in a DC motor or generator is to keep the commutator clean of any foreign objects or dirt.You can learn more about DC motor at
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an incompressible fluuid flows alogn a 0.25 m diameter pipe with a unifrom velocity of 3 m/s if the pressure drops between the upstream adn downstream sections of the piope is 22 kpa determine the power transferred to the fluid due to fluid normal stresses
The power transferred to the fluid due to fluid normal stresses is 3.2406kW.
What is power?
In science and engineering, the term "power" refers to the rate at which work is completed or energy is delivered. It can also be expressed as the ratio of work completed (W) to time (t), or W/t. Power can alternatively be defined as the result of the force used to move an object multiplied by the speed of the object moving in the direction of the force. For example, foot-pounds per minute, joules per second (or watts), and ergs per second are all examples of work-per-unit-time units of power.
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Drivers may pass on a two-lane roadway marked with a single solid yellow line on their side of the centerline.
True/False
which type of fracture is associated with intergranular crack propagation? either ductile or brittle ductile neither ductile nor brittle brittle
Intergranular fracture or intergranular embrittlement occurs when a crack propagates along the grain boundaries of a material, usually when these grain boundaries are weakened.
What is ductile and brittle fracture?One type of brittle fracture is an intergranular fracture.When brittle fracture takes place, the crack starts out quickly and moves through the material quickly.When a crack spreads along a material's grain boundaries, also known as intergranular fracture, intergranular cracking, or intergranular embrittlement, this usually happens when the grain boundaries are weak.The transgranular fracture, which is more frequently observed, develops when the crack penetrates the material grains.Brittle fracture is defined as a material that has either no or very little plastic deformation prior to fracture.Brittle materials are those that exhibit this feature, such as rock, concrete, glass, and cast iron.Ductile fracture refers to material that has undergone significant plastic deformation prior to fracture.To learn more about transgranular fracture refer,
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technician a says that if a pull occurs sometimes to the left and sometimes to the right, this is called memory steer. technician b says that if a vehicle pulls to one side only during acceleration, this is called torque steer. which technician is correct?
The correct answer is technician B says that if a vehicle pulls to one side only during acceleration then this is called torque steer.
Torque steer happens mostly in FWD cars and refers to a situation when a car's engine torque influences its steering. When the driver accelerates quickly, the car's drive wheels, which also happen to be its steering wheels, can tug or veer to either side.Torque steer can be caused by a number of things including a variance of traction between the two drive wheels. Tread or even tyre pressure can impact on the car's ability to pull away in a straight line. The most common cause in front wheel drive cars is a transversely mounted engine.
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Answer:
Tech B only
Explanation:
Memory steer is what happens if you torque down your wheels when they aren't in the straight ahead position, they will want to steer in that direction.
Torque steer is the car pulling to one side during acceleration, this only happens in Front Wheel Drive Vehicles
you build a wooden form on your job site that will be placed in a concrete form to create an opening for a doorway in the concrete wall. what should you call this wooden form?
You should call this wooden form Insulated Concrete Forms. Insulated Concrete Forms (ICF) are a kind of wall construction material used in residential construction.
Insulated Concrete Forms (ICF) are a kind of wall construction material utilized in residential construction. It serves as a substitute for conventional wood-frame houses.
Styrofoam blocks are used to build the walls rather than studs, and concrete is then poured into these forms. The styrofoam blocks are known as insulated concrete forms (ICFs). They snap together like Lego and are lightweight, straightforward, and simple to use.
They are permanent forms that remain in place even after the concrete has been poured, and once the concrete has dried, they aid in insulating the house. Concrete-filled forms can be piled and connected to create ceilings, walls, roofs, and pool walls.
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(i) what assumptions about the relationship between the inputs and output are inherent in this specification? do scatter plots support this functional form?
A problem that will be handled by a procedure is described by an input-output specification.
What is input and output specification?An input-output specification outlines the issue that a procedure will try to solve. The input part and the output part are its two components. The input component outlines the kind of data object that should be provided for each actual argument as well as any presumptions that the process might make.A technical specification known as an output specification defines the project scope primarily through performance-based requirements.It is used to assess technical compliance and serves as the technical cornerstone of both the procurement and delivery phases.Known as classical specifications, they outline the precise services to be provided, sometimes in great detail, along with the standard you must meet and the approach you must take to meet the standard.To Learn more About input-output specification Refer To:
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after an annual inspection has been completed and the aircraft has been returned to service, an appropriate notation should be made
The correct answer is an appropriate notation should be made in the aircraft maintenance records.
Airplane maintenance records include: The total time in service of the airframe and the status of the life-limited parts of the airframe. The time since the last overhaul of the items installed on the aircraft. The indication of the current inspection status of the aircraft, including the time since the last inspection.they serve as a written record of all the maintenance history that has occurred over the life of the aircraft. It also serves as part of the means needed to determine if an aircraft is current on all required maintenance, and if it is in an airworthy condition
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size circualr clarifiers to settle the stream from the floccualtors ina water treatment plant. the water flow rate is 5.0 mgd, the design overflow rate is 725 gpd/ft2, and the hydraulic ressidence time is 4 hours.l should you use two clarifiers in parallel or more?
The correct answer is diameter of clarifier = 66.261 feet Image transcriptions Water Flow rate Hydraulic residence.
Hydraulic residence time. The HRT indicates the duration in hours that the feed solution remains in the MBR before it is processed as permeate by the membrane. The formula for HRT is. (5.1) From Eqn (5.1), it is evident that HRT depends on the hydraulic volume of the reactor and the permeate flow.So, for accurate HRT calculation, use the hydraulic retention time formula “HRT = V/Q.” Here, you are dividing the volume of the aeration tank, which is a value of meters cubed, by the influent flow rate.
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how fast can you drive around this curve before a steel toolbox slides on the steel bed of the truck?
Answer:
The maximum speed of a truck around this curve before a steel toolbox slides on the steel bed of the truck is 14.832 m/sec.
What is centripetal force?
When a body is accelerated in a close curve a force towards its centers is acting known as centripetal force.
where,
F = centripetal force in N
m = mass in Kg
v = linear velocity in m / s
r = radius in m
According to conditions in order to avoid the slide of the box. The weight of the box must be greater than or equal to the centripetal force acting on the pickup truck.
given,
r = 22 m
g = 10m/s^2
The maximum speed of a truck around this curve before a steel toolbox slides on the steel bed of the truck is 14.832 m/sec.
A truck can travel around this curve at a maximum speed of 14.832 m/sec before a steel toolbox slides onto the truck's steel bed.
What is speed ?Speed is what it means. the speed at which an object's location changes in any direction. The distance traveled in relation to the time it took to travel that distance is how speed is defined. Since speed simply has a direction and no magnitude, it is a scalar quantity.
It is the distance that an object moves in a particular direction. It is a way to gauge how far something moves over a specific period of time.
Galileo Galilei, an Italian physicist, is credited with being the first to calculate speed by dividing it by the distance traveled and the time required. Galileo defined speed as the amount of distance traveled in a given amount of time.
Thus, A truck can travel around this curve at a maximum speed of 14.832 m/sec before a steel toolbox slides onto the truck's steel bed.
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in your own words describe the following heat treatment procedures for steels and, for each, the intended final microstructure: (a) full annealing (b) normalizing (c) quenching (d) tempering.
(a) Through the use of heat, the distorted cold-worked lattice structure is transformed back into a strain-free one in the full annealing procedure. This is a solid-state process, and the furnace's slow cooling is often the next step. The final intended microstructure is a coarse pearlite, with proeutechtoid ferrite
What is a microstructure?
The structure of a prepared surface or thin material foil, as seen using a microscope with a magnification of more than 25 times, is referred to as microstructure.
When it comes to physical characteristics like strength, toughness, ductility, hardness, corrosion resistance, high/low-temperature behavior, wear resistance, and other factors, a material's microstructure—which can be broadly categorized as metallic, polymeric, ceramic, or composite—can have a significant impact. These characteristics in turn govern how the material is used in industrial practice.
Continued Answer:
(b) By exposing a material to air that is at room temperature after it has been heated to a high degree, normalizing includes bringing the material back down to room temperature. This gradual heating and cooling of the metal change its microstructure, resulting in a decrease in hardness and an increase in ductility. The final intended microstructure is a fine pearlite structure.
(c) In order to modify a metal's mechanical characteristics from its initial state, quenching entails rapidly cooling the metal. Metal is heated above ambient temperature—typically just above the temperature at which it recrystallizes but below the temperature at which it melts—to accomplish the quenching process. The final microstructure is the martensite.
(d) In metallurgy, tempering is a process that raises a metal's temperature while keeping it below the melting point and then cools it, typically in air, to improve the properties of the metal, particularly steel. By lowering brittleness and internal stresses, the process has the effect of toughening. The final intended microstructure is tempered martensite with controlled delta ferrite.
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regarding the implications of neuroscience for training, which of the following is not true?
A) Learners have to eliminate distractions.
B) Learners need to make their own connections to new ideas.
C) Emotional stimulation should be minimized.
D) None of the answers are correct
Regarding the implications of neuroscience for training, the one that is not true is emotional stimulation should be minimized. The correct option is C.
What is neuroscience?The comprehensive research of the nervous system, its functions, and disorders is known as neuroscience. It is a multidisciplinary science that incorporates physiology, anatomy, molecular biology, developmental biology, and other disciplines.
Neuroscientists study the brain and how it affects behavior and cognitive functions. Neuroscience is concerned with more than just the normal functioning of the nervous system.
One of the misconceptions about the implications of neuroscience for training is that emotional stimulation should be avoided.
Thus, the correct option is C.
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Describe the refrigeration cycle & how it transfers heat, including all the components & lines. be sure to discuss why the refrigerant is a liquid or vapor and why it is cold or hot.
Heat can be diverted away from the area you want to cool using the refrigeration cycle, also known as a heat pump cycle. This is done by repeatedly compressing and expanding the working refrigerant (air, water, synthetic refrigerants, etc.) to change its pressure.
What is the cycle of a heat pump?In order to heat the air within a building, a heat pump warms the air outside by drawing heat from it and adding it to it. The following procedure is used to achieve this: A gas is created when liquid refrigerant absorbs heat from the ambient air in the "evaporator."The pressure buildup from the compressor raises the temperature of the refrigerant, just like it does with everything that is put under pressure. The refrigerant is a heated vapor, ranging in temperature from 120° to 140°F, when it exits the compressor.The chemical refrigerant, once transformed from a gas to a liquid state, has a remarkable capacity to absorb heat. The heat inside your house might be absorbed and released outside when the refrigerant undergoes a state shift as a result of compression and pressurization.To learn more about Compressor refer to:
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Select all that are true. Group of answer choices major parts of a dc motor are stator, rotor, commutator, and brushes. If the rotor of a dc motor consists of just one conductor loop, the output torque will vary in magnitude from zero to a maximum and back to zero over every half turn of the rotor. Using multiple loops in the rotor of a dc motor not only gives higher torque but also ensures a constant magnitude of the output torque. Using electromagnets in the stator of a dc motor makes higher torque values possible. In a series motor, rotor and stator are connected in series. In a shunt motor, a bypass circuit is provided to prevent overload.
In the context of the DC motors following statements given in options (A), (B),(D), and (E) are true.
A DC motor is categorized into a class of electrical motors that convert direct current electrical energy into mechanical energy. It means that any electric motor that works using direct current is termed as a DC motor.
Pertaining to the DC motor true statements are given below:
'Major parts of a DC motor are the commutator, rotor, stator, and brushes'.'If the rotor of a DC motor comprises just one conductor loop, the output torque varies in the magnitude from zero to a maximum and back to zero over every half turn of the rotor.''Using electromagnets in a DC motor's stator creates higher torque values possible'.'In a series, DC motor rotor and stator are connected in series'.You can learn more about DC Motor at
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re-write this program so that it searches an array of integers rather than characters. search the integer array nums[8]
A group of comparable data elements in program kept in close proximity to one another in memory is called an array. It is the most basic data structure because each data element can be directly accessed by using only its index number.
What is program?A computer program is a set of instructions, and the term itself can be used both as a verb and a noun. It is used as a verb to describe the act of developing software by using a programming language. An application, program, or application software is a noun used to describe the process of carrying out a particular task on a computer.
An application like Microsoft PowerPoint, for instance, offers a means of producing presentation-related documents. We can browse any website using a browser, which is also an application.
The program that searches an array of integers rather than characters is here:
// This program performs a linear search on a character array
// Insert Name Here
#include <iostream>
using namespace std;
int searchList(int[], int, int); // function prototype
const int SIZE = 8;
int main()
{
int numbers[SIZE] = {3, 6, -19, 5, 5, 0, -2, 99};
int found;
int num;
cout << "Enter a integer to search for:" << endl;
cin >> num;
found = searchList(numbers, SIZE, num);
if (found == -1)
cout << "The number " << num
<< " was not found in the list" << endl;
else
cout << "The number " << num << " is in the " << found + 1
<< " position of the list" << endl;
return 0;
}
//*******************************************************************
// searchList
//
// task: This searches an array for a particular value
// data in: List of values in an array, the number of
// elements in the array, and the value searched for
// in the array
// data returned: Position in the array of the value or -1 if value
// not found
//
//*******************************************************************
int searchList(int List[], int numElems, int value)
{
for (int count = 0; count <= numElems; count++)
{
if (List[count] == value)
// each array entry is checked to see if it contains
// the desired value.
return count;
// if the desired value is found, the array subscript
// count is returned to indicate the location in the array
}
return -1; // if the value is not found, -1 is returned
}
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a transformer is connected as a step-down transformer with a 10:1 turns ratio. if the primary voltage is 100 v, what is the voltage of the secondary? question 1 options: vsec
The correct answer is 600v is the voltage of the secondary of a transformer.
A transformer is an electrical apparatus that manipulates the level of voltage flowing through any point in a power grid. In a distribution system, the transformer decreases the voltage traveling through power lines to a level more suitable for residential and commercial use.An electrical device that can change the A.C. current is known as a transformer. Principle – A transformer works on the principle of mutual induction. Mutual induction is the phenomenon by which when the amount of magnetic flux linked with a coil changes, an E.M.F. is induced in the neighboring coil.
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an inventor claims to have developed a refrigerator that maintains the refrigerated space at 40f while operating in a room where the temperature is 80f and that has a cop of 13.5. is this claim reasonable?
The claim made by inventor is invalid. A fridge set to 37° F will keep food fresh for as long as possible, preventing the growth of bacteria in raw meats or ice crystals on greens.
In the freezer, keeping food completely frozen requires a temperature of 0°F. The Food and Drug Administration states that 40 degrees Fahrenheit or lower is the recommended refrigerator temperature (FDA). Salmonella, E. coli, and listeria, three bacteria that can result in foodborne diseases, cannot grow at these temperatures. The primary portion of the refrigerator should be no warmer than 40 degrees Fahrenheit. 37 degrees Fahrenheit is the ideal temperature for keeping food cold. Install a thermometer inside your refrigerator if you're unsure of the ideal temperature for one.
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the water level in a tank is 20 m above the ground. a hose is connected to the bottom of the tank, and the nozzle at the end of the hose is pointed straight up. the tank cover is airtight, and the air pressure above the water surface is 2 atm gage. the system is at sea level. determine the maximum height to which the water stream could rise
The maximum height of the water stream that could rise is 40.65 m. It can be calculated using Principle of Bernoulli.
Principle of Bernoulli can be described an increase in the speed of a fluid happen simultaneously with a decrease in pressure or a decrease in the fluid's potential energy. Equation of Bernoulli is shown as a conservation of energy law for a flowing fluid. Bernoulli equation is shown below:
[tex]P_1[/tex]/ρg + [tex]v_1[/tex]²/2g + [tex]h_1[/tex] = [tex]P_2[/tex]/ρg +[tex]v_2[/tex]²/2g + [tex]h_2[/tex]
Where:
ρ = fluid density
g = acceleration due to gravity
[tex]P_1[/tex] = pressure at elevation 1
[tex]v_1[/tex] = velocity at elevation 1
[tex]h_1[/tex] = height of elevation 1
[tex]P_2[/tex] = pressure at elevation 2
[tex]v_2[/tex] = velocity at elevation 2
[tex]h_2[/tex] = height at elevation 2
Assumed that the water at free surface, so [tex]v_1 = v_2[/tex] = 0
So, the formula will be
[tex]P_1[/tex]/ρg + [tex]h_1[/tex] = Patm/ρg + [tex]h_2[/tex]
Based on the scenario, we know that:
[tex]h_1[/tex] = 20 m
[tex]P_1[/tex]gage = 2 atm ≈ 20265 N/m
ρ = 1000 kg/m²
From the scenario, we will determine the maximum height by using the equation of bernoulli and it will be
[tex]h_2[/tex] = ([tex]P_1[/tex] - Patm)/ρg + [tex]Z_1[/tex]
[tex]h_2[/tex] = [tex]\frac{2 atm}{1000(9.81)}[/tex] x [tex](\frac{101325N/m^{2} }{1 atm} )(\frac{1 kg.m/s^{2} }{1 N} )[/tex] + 20 = 40.65 m
So, from that, we can conclude the maximum height of the water stream that could rise is 40.65 m.
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What finite resources may be used in the production of a pair of training shoes?
Answer:
The outsole and upper are glued together during assembly. However, in order to allow the shaft to later be stitched to the welt, the insole is first placed on the shoe and temporarily fastened to the lasts with nails. To give the shoe its final shape, the upper is then lasted and pulled tightly.
Modern shoes are most frequently made of leather, fabrics, synthetic materials, rubber, foam, and plastic. Each has a particular purpose in shoes. Each material can be used in a sneaker, depending on the design. One of the cornerstones of shoe design is the choice of material.
Which of the following is not a function of CSF?
A. regulate the chemical environment of the nervous tissue
B. rinse metabolic wastes from the nervous tissue
C. provide oxygen and nutrients to the nervous tissue
D. protect the brain from striking the cranium when the head is jolted
E. allow the brain to attain considerable size without being impaired by its own weight
provide oxygen and nutrients to the nervous tissue.
What is a Cerebrospinal Fluid (CSF) Analysis?
Your brain and spinal cord are surrounded by a clear, colorless fluid called cerebrospinal fluid (CSF). Your central nervous system is made up of your brain and spinal cord. Everything you do, including how you move, breathe, see, think, and more, is coordinated and under its control.
Your brain and spinal cord are protected from trauma or shock by cerebral spinal fluid, which functions as a cushion. Additionally, the fluid aids in the proper operation of your central nervous system and removes waste from the brain.
A CSF analysis is a series of tests that use a sample of your cerebrospinal fluid to help identify conditions that affect the central nervous system, including diseases of the brain, spinal cord, and other organs.
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4. in a horizontal cross section, raising (increasing the elevation of) the outer edge of a road with respect to inner edge is known as .
Superelevation is a method of constructing infrastructure in roadway curves in which the outer edge of the pavement is raised above the inner edge.
What is Superelevation ?The transverse slope provided to counteract the effect of centrifugal force and reduce the tendency of the vehicle to overturn and skid laterally outwards by raising the pavement outer edge with respect to the inner edge is known as superelevation. " e " represents superelevation.Camber or cross slope = minimum superelevation Camber: A slope that allows rainwater to drain quickly in the transverse direction is known as Camber or Cross slope. This also prevents vehicle slipping and skidding.The radius of the horizontal curve (R) decreases at each horizontal section of a road, causing centrifugal force to increase and act outwards in the horizontal direction on the outer wheel.The transverse slope along the width of the road is provided to generate centripetal force to counteract centrifugal force. It is accomplished by raising the outer edge in a transverse direction with respect to the inner edge for the entire length of the curved section.To learn more about Superelevation refer :
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