Red velvet cake, which is well-liked in the southern United States, is a vanilla cake with a few tablespoons of cocoa powder and red food coloring added.
What Is the History of Red Velvet Cake?Red velvet cake is thought to have started during the Victorian era, according to historians. Since cake flour wasn't yet available, vinegar was used to tenderize cakes. The cake turned reddish-brown when vinegar and non-Dutch processed cocoa powder were combined.Early in the 20th century, the first red velvet cake recipes were published, and as the cake gained popularity across the United States, southerners began adding buttermilk as another acid.Before the Second World War, the method of making cocoa powder changed, and it stopped becoming red when mixed with acids. Reduced beet juice was added because people continued to desire that red cake. Red velvet cake became widely known thanks to Adams Extract, a southern dye company, which published a recipe using its red food dye.The first frosting was a French roux-style buttercream, also known as gravy frosting since it begins with the same kind of roux used to make gravy. Cream cheese frosting is a much more recent invention. It is incredibly light and fluffy when the butter is added at the end, but it takes a long time to make. Consequently, cream cheese frosting became the standard.To Learn more About Red velvet cake refer To:
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determine the change in the internal energy of helium, in kj/kg, as it undergoes a change of state from 100 kpa and 20°c to 600 kpa and 300°c using the equation of state
The change in the internal energy of helium is 873.6 kJ/KG.
What is ideal gas equation ?In this situation, the ideal gas law, often known as an equation of state, governs all gases: The universal (or perfect) gas constant, 8.31446261815324 joules per kelvin per mole, and n, the number of moles of the gas, are the two inputs into the formula PV, which equals nRT.The relationship between a gas's pressure P, volume V, and temperature T in the range of low pressures and high temperatures, when the gas's molecules move virtually independently of one another, is known as the ideal gas law, also known as the perfect gas law.The International System of Units uses the units of joules, cubic meters (m3), newtons (N), pascals (Pa), and newtons per square meter (N/m2) to measure energy, volume, force, and pressure.Find the attachment answer
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how high would water rise in the pipes of a building if the water pressure gauge shows the pressure at the ground floor to be 270 kpa (in m)
27.6 m high would water rise in the pipes of a building if the water pressure gauge shows the pressure at the ground floor to be 270 kpa (in m).
How does water pressure increase with height?One liter of water weighs one kilogram and has a volume of one thousand centimeters since water is roughly 1000 times heavier than air. Again, if we make a column with a surface area of 1 cm2 and a height of 10 m, we will achieve a water pressure of 1 kg/cm2 (1 bar = 1 kg/cm2) at the bottom. Every 10 meters of depth results in an increase of 1bar in water pressure.Larger pipes improve the water flow through the line, but they won't boost your water pressure if the water flow isn't sufficient. Although municipal water systems offer tremendous pressure, a bigger line won't necessarily be beneficial. Larger lines don't automatically make things stronger or quicker.Learn more about water pressure refer to :
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a heating element operates on 115 v. if it has a resistance of 15.4 ohms, what current, in amps, does it draw?
The heating element is currently receiving 7.47 mps of current. we can construct the equation for the current flowing through the heating element as well as the potential difference across the heating element depending on the resistance of the element.
What is the definition of the houses law?The Homes Law, which indicates that the current flowing through the heating element and into the resistance is equivalent, is applied in this case, which states that the potential difference across the hitting element, or V, is equal to that product.Using this equation, we can construct the equation for the current flowing through the heating element as well as the potential difference across the heating element depending on the resistance of the element. Furthermore, across the L.A. Mentors 115 problem, the potential difference is bold. Additionally, there is a possibility of a parliament with 15 14 arms; therefore, the maximum electric current is 115. The heating element is currently receiving 7.47 mps of current.To learn more about Homes Law refer to:
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you are given a 7/16-in-dia, class 7 bolt with rolled threads is preloaded to 70% of its proof strength when clamping a 2.75 in-thick sandwich of solid steel. you are also to find the safety factors against fatigue failure, yielding and joint separation when a 1000 lbf (peak) fluctuating external load is applied. there is only 1 bolt used. the bolt modulus and the member are the same. hence, you are to calculate the joint factor and its coefficients followed by all the fatigue parameters. for this question, what is the value of the local mean fatigue stress () on the bolt in units of psi?
The local mean fatigue stress () on the bolt is 3846.15 psi
What is fatigue stress?
failure caused by repetition and load cycle of a structure or component. Even if the applied stresses are less than the component's allowable stress, failure from fatigue stress can still happen because of the frequency of the loads. Although fatigue stress is frequently linked to tensile loads, it can also happen frequently under compression loads. Flange: A ring-shaped bulk piping part that joins two pieces of pipe together or, more generally, connects piping to equipment. Although they can also be threaded, flanges are generally welded to a connected pipe. A gasket is positioned between two fibers for sealing and two flanges are bolted together using bolts and nuts.
The local mean fatigue stress () is calculated by dividing the fluctuating external load (1000 lbf) by the effective area of the bolt (A_e) and using the following equation:
= (1000 lbf) / A_e
Where A_e is the effective area of the bolt, which can be calculated using the following equation:
A_e = (π/4) * (7/16 in)^2 * (0.7) = 0.26 in^2
Therefore, the local mean fatigue stress () on the bolt is:
= (1000 lbf) / (0.26 in^2) = 3846.15 psi
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problem 1: (a) design a compound 2-stage reverted gear train as a speed increaser to provide a total speed increase of exactly 48:1. minimize the gearbox size and use 20° pressure angle full depth gears all with the same diametral pitch, and avoid interference. show a simple scaled sketch or drawing of your meshed gears and clearly give the number of teeth on each gear (n2, n3, n4, n5). (b) repeat this with a 22.5° pressure angle. (c) using a diametral pitch of 16, what is the distance between the shafts, d, in cases (a) and (b)?
The distance between the shafts, d, in cases (a) and (b) Using a diametral pitch of 16 is, D = 29.56m
What is distance?Distance is a measurement of how far apart two objects or points are, either quantitatively or occasionally qualitatively. Distance in physics or common usage can refer to a physical length or an estimate based on other factors (e.g. "two counties over").
The term is frequently used metaphorically to refer to a measurement of the difference between two similar objects (such as statistical distance between probability distributions or edit distance between strings of text) or a degree of separation since spatial cognition is a rich source of conceptual metaphors in human thought (as exemplified by distance between people in a social network).
The concept of a metric space is used in mathematics to formalize the majority of such notions of distance, both literal and figurative.
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Thermal energy is released when calcium chloride dissolves in water. It is absorbed when ammonium chloride dissolves in water. Which substance will you use in your design?
Answer:calcium chloride
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Explanation:
technician a says a worn or damaged idler arm can cause front-end shimmy. technician b says a worn or damaged idler arm can cause hard steering. who is correct?
Insufficient power steering fluid in your system is the most frequent cause of a stiff steering wheel.
What can be a sign that the steering system's parts are damaged?Any noises emanating from the steering wheel could be an indication of a broken steering belt, worn internal gears, or insufficient steering fluid. A new belt must be purchased right away if there is a belt problem. When making a turn, have you noticed a whining or a delayed response? The pump might be about to stop working.Insufficient power steering fluid in your system is the most frequent cause of a stiff steering wheel. This frequently occurs when there is a system leak coming from the pressurized hose location. The majority of the time, the reason for the fluid leak is a fractured or loose hose.To learn more about Steering refer to:
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"smart" wifi devices which are equipped with more sensors, tend to use more energy or watts than old fashioned single contact devices.
true or false?
Answer: true explanation:Smart home devices like thermostats and appliances are highly efficient because they can automatically adjust to changing energy needs. Plus, they can detect inefficiencies so electricity, water, and gas waste can be minimized. Your energy consumption can be reduced exponentially when smart devices run your home.
an 8-bit a/d converter has a reference voltage of 10 v. (5 pts) a. what is the resolution of the a/d converter?
The smallest incremental voltage that the ADC can detect and recognize without changing the digital output is referred to as the resolution.
A DAC's resolution can be determined in what ways?The formula Resolution = (Range /(2n -1)) is used to calculate resolution for n-bit DACs. which will result in the slightest alteration the DAC can detect. Range, on the other hand, is the maximum value that a DAC can measure.The smallest incremental voltage that the ADC can detect and recognize without changing the digital output is referred to as the resolution. The ADC output bit count is how it is expressed. So an ADC with a resolution of 12 bits is one that converts an analog signal to a 12-bit digital value.To learn more about Resolution refer to:
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2. compute the normal and shear stresses when the cube is rotated 20o clockwise from the horizontal plane and draw them on the cube.
The shear stress must act parallel to the boundary at a location like an or b on the cross section's boundary.
What kind of stress is typical?According to the name, a stress is considered normal when the direction of the deforming force is perpendicular to the body's cross-sectional area. If the wire's length or the body's volume changes, the stress level will remain normal.The shear stress must act parallel to the boundary at a location like an or b on the cross section's boundary. The shear formula, = VQ/Ib, cannot be used to calculate the shear stresses at line ab across the cross section since it is not parallel to the y axis.To learn more about Shear stress refer to:
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a thin-walled, uninsulated 0.4-m-diameter duct is used to route chilled air at 0.07 kg/s through the attic of a large commercial building. the attic air is at 37°c, and natural circulation provides a convection coefficient of 4 W m2K at the outer surface of the duct. if chilled air enters a 16-m-long duct at 7°c, what is its exit temperature (°c) and the rate of heat gain (w)? properties of the chilled air may be evaluated at an assumed average temperature of 300 k.
The exit temperature of the chilled air is 37.7°C and the rate of heat gain is 3040 W.
To determine the exit temperature and rate of heat gain for the chilled air, we need to use the heat transfer equation. The heat transfer equation is:
Q = U × A × DT...(i)
First, we need to calculate the surface area of the duct. Since the duct is a cylinder, the surface area is:
A = 2 × pi × r × l
Where r is the radius of the duct and l is the length of the duct. In this case, the radius of the duct is 0.4 m and the length is 16 m, so the surface area is:
A = 2 × pi × 0.4 × 16
A = 25.1 m2
Next, we need to calculate the temperature difference between the air inside the duct and the air outside the duct. The temperature of the air inside the duct is 7°C, and the temperature of the air outside the duct is 37°C, so the temperature difference is:
DT = 37 - 7
DT = 30
Now, we can plug the values we calculated into the heat transfer equation to find the rate of heat transfer:
Q = U × A × DT
Q = 4 × 25.1 × 30
Q = 3040 W
Finally, we can use the conservation of energy equation to determine the exit temperature of the air:
Q = m × c × DT
In this case, the mass flow rate of the air is 0.07 kg/s, and the specific heat capacity of air at 300 K is 1.005 kJ/kgK.
So, the equation to solve for the exit temperature:
T exit = 7 + Q / (m c)
T exit = 7 + 3040 / (0.07 x 1.005)
T exit = 37.7°C
Therefore, the exit temperature of the chilled air is 37.7°C and the rate of heat gain is 3040 W.
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c. calculate the instantaneous decay and neutron absorption rates for 239u nuclei and determine their fraction of the combined loss rate.
The decay constant of a radioactive nuclide is the probability of decay per unit time (symbol: and units: s1 or a1). As a result, as dP/P = dt , the number of parent nuclides P decreases over time t.
What is decay constant?A population of radioactive atoms' size and the rate at which they are vanishing due to radioactive decay are inversely correlated and are known as the decay constant. According to the equation dN/dt = N, where is the decay constant, the rate of change is determined by the size of a population of radioactive atoms at a given time t and the amount by which it decreases in time dt, denoted as N.
The size of the initial population of radioactive atoms at time t = 0 is represented by N0 in the equation's output, which is N = N0et after integration. This demonstrates that the population decrements exponentially and at a rate determined by the decay constant. A radioactive atom's half-life is the amount of time it takes for half of its initial population to decay.
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what is the output frequency of a three-stage binary counter with an input clock frequency of 80 khz?
The lowest output frequency that can be used with a cascaded counter if a clock frequency is applied is: The output frequency that is lowest will be = [tex]2.5kHz[/tex]
What is the counter's output frequency?No matter whether the counter is synchronous or asynchronous, the output frequency for a binary counter or M mod counter is f/2n, where f is the input frequency and n is the number of flip-flops (but only if the duty cycle is 50%).A counter is a device that stores (and occasionally displays) the number of times a specific event or process has occurred in digital logic and computing, frequently in relation to a clock.The most typical kind is a sequential digital logic circuit, which has several output lines and a clock-input line.A binary three-stage counter counts.[tex]2^{2} = 8[/tex] states.Hence the output frequency is[tex]80/23=80/8=10KHz[/tex]What is a 4-bit binary counter's output frequency for a 160 MHz input clock? A 4-bit counter's final flip flop's output is equal to the input clock/16.Thus, the output frequency is 160MHz/16, or 10MHz.TO learn more about counter's output frequency refer to:
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a wind turbine rotates at 19 rev/min. if its power output is 4.0 mw, what is the torque produced on the turbine from the wind (in n · m)?
The torque produced on the turbine from the wind is 2 000 kN/m². Torque is the rotating equivalent of force in physics and mechanics.
What is torque?Torque is the rotational equivalent of linear force in physics and mechanics. Depending on the field of study, it is also known as the moment, moment of force, rotational force, or turning effect. It represents a force's ability to cause a change in the rotational motion of the body.
The number of revolution per minute of the turbine = 19 rev/min
The power output of the turbine = 4.0 MW
The power transmitted to a shaft equation is given as follows;
P = 2* N * T * π / 60
Where;
P = The power transmitted to a turbine shaft = 4.0 MW
N = The number or revolutions per minute = 19 rev/min
T = The torque produced on the turbine by the wind
Therefore
Torque T = P *60 / 2 * N * π = 4.0 * 60 / 2 * π * 19 = 240 / 38 * π
= 6.31 / π
The torque produced on the turbine from the wind = 6.31/π MN·m
≈ 2 MN·m² = 2 000 kN/m² .
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a single-threaded 25-mm power screw is 25 mm in diameter with a pitch of 5 mm. a vertical load on the screw reaches a maximum of 5 kn. the coefficients of friction are 0.06 for the collar and 0.09 for the treads. the frictional diameter of the collar is 45 mm. find the overall efficiency and the torque to ""raise"" and ""lower"" the load.
The torque required to raise the load is 15.75 N-m. The torque required to lower the load is 7.81 N-m.
The overall efficiency is 0.252
What is torque?Torque is the force that can cause an object to rotate around an axis. In linear kinematics, force is what causes an object to accelerate. Similarly, torque is responsible for angular acceleration.
As a result, torque is defined as the rotational equivalent of linear force. The axis of rotation is the straight line around which the object rotates. Torque is simply the tendency of a force to turn or twist in physics.
Torque is described using a variety of terms, including moment and moment of force. The moment arm or lever arm is the distance between the point of application of force and the axis of rotation.
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if a 25 kva transformer had a primary voltage of 4,800 volts and an output voltage of 240 volts, what would the maximum primary and secondary amperage be before overload?
The maximum primary amperage before overload = 5.2083 amp
The maximum secondary amperage before overload = 104.166 amp
What is amperage?The one-word term for "electrical current," which is measured in amperes, is amperage (amps). It describes the amount of electrical charge flowing through a system, or the maximum amount of electrical current that a system can safely handle. This maximum amount is also known as "ampacity," which is a portmanteau of "amperage capacity."
One ampere is equal to one coulomb of charge (6.241 x 10¹⁸ electrons) per second. As an example, if two amperes pass through a given point in an electrical system every second, the system has an amperage of two.
When it comes to electrical safety, amperage is a crucial concept to understand. Although electricity can be expressed as wattage, voltage, or amperage.
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a steel tape measure has been calibrated at 250c. if the tape measure is used to measure a length of plastic pipe when the outside temperature is 150c, the measurement will be:
A steel tape measure has been calibrated at 25°c. if the tape measure is used to measure a length of plastic pipe when the outside temperature is 15°c, the measurement will be: lesser than the actual measurement.
What is temperature?Specifically, temperature is a measurement of the average kinetic energy of the particles in an object, which is a form of energy linked to motion. It expresses how hot or cold something is. The question is, however, how hot and how cold is each? It is not very scientific to use words like hot and cold.
The use of temperature is required if we are to accurately describe how hot or cold something is. Take melted iron as an example; how hot is it? A physical scientist would take the liquid metal's temperature into consideration to provide an answer. Confusing words like "hot" or "cold" should be replaced with "temperature."
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a 4-ton air conditioner removes 5.06 × 10 7 j 5.06×107 j (48,000 british thermal units) from a cold environment in 1.00 h. (a) what energy input in joules is necessary to do this if the air conditioner has an energy efficiency rating ( e e r ) (eer) of 12.0? (b) what is the cost of doing this if the work costs 10.0 cents per 3.60 × 10 6 j 3.60×106 j (one kilowatt-hour)? (c) discuss whether this cost seems realistic. note that the energy efficiency rating ( e e r ) (eer) of an air conditioner or refrigerator is defined to be the number of british thermal units of heat transfer from a cold environment per hour divided by the watts of power input.
(a) Energy input in joules that is necessary to do this if the air conditioner has an energy efficiency rating (eer) of 12.0 is, W = 1.44 × 10⁷ Joules.
(b) The cost of doing this if the work costs 10.0 cents per 3.60 × 10⁶ j is, Cost = $0.4 or 40 cents.
What is energy?In physics, energy is the quantifiable property that is transferred to a body or to a physical system and is observable in the production of work as well as in the form of heat and light. Energy is a conserved resource; according to the law of conservation of energy, energy can only change its form; it cannot be created or destroyed. The joule is the unit of measurement for energy in the International System of Units (SI) (J).
Common types of energy include the kinetic energy of a moving object, the potential energy held by an object, the elastic energy held in a solid object, the chemical energy linked to chemical reactions, the radiant energy carried by electromagnetic radiation, and the internal energy contained within a thermodynamic system.
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Spot welding is a:
A) resistance welding process.
B) arc welding process.
C) braze welding process.
D) laser welding process.
It is to be noted that Spot welding is a: "resistance welding process." (Option A)
What is the definition of Spot welding?Spot welding (also referred as resistance spot welding) is a method of resistance welding. This welding procedure is generally used to join two or more metal sheets together by providing pressure and heat to the weld region using an electric current.
Spot welding is commonly used to join specific types of metal sheets, welded wire mesh, or wire mesh. Thicker stock is more tricky to spot-weld because heat travels more quickly into the surrounding metal. Many sheet metal objects, such as metal buckets, may be identified by spot welding.
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a 12-bit bipolar dac has a 10.00-v reference. find out: (6 pts) a. what output voltage will be resulted from digital inputs of 4a6h, 02bh, and d5dh?
A 12-bit bipolar dac has a 10.00-v reference, the output voltage from digital inputs of
4a6h, v₀ = 2.906 v
02bh, v₀ = 0.105 v
d5dh, v₀ = 8.3541 v
What is voltage?An electrical circuit's power source exerts pressure known as voltage on charged electrons (current), causing them to flow through a conducting loop and perform tasks like lighting a lamp.
Voltage is measured in volts and is simply equal to pressure. It honors Italian physicist Alessandro Volta (1745–1827), who developed the voltaic pile, the predecessor to the modern household battery.
Voltage was first known as electromotive force in the early history of electricity. For this reason, voltage is denoted by the letter E in equations like Ohm's Law.
The difference in electric potential between two points is known as voltage, also spelled as electric pressure, electric tension, or electric potential difference. It is equivalent to the work required to move a test charge between two points in a static electric field.
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a steel component is nickel plated to give corrosion protection. to increase the strength of the bond between the steel and the nickel, the component is heated for 4 h at 1000c. if the diffusion parameters for nickel in iron are do ¼ 1.9 104 m2 /s and qd ¼ 284 kj/mol, how far would you expect the nickel to diffuse into the steel in this time?
Diffusion coefficient, D = 3.77 × 10⁻⁶ m²/s
Thus, approximate depth of diffusion is 2.3 microns.
What is diffusion?Diffusion is a process that results from molecules moving randomly and that allows matter to move from one area of high concentration to another area of low concentration. A well-known illustration is how quickly a flower's fragrance fills a room's still air.
Thermal energy that is transported or diffused from a temperature that is higher to one that is lower constitutes heat conduction in fluids. Neutrons must diffuse through a medium, where they frequently scatter but very infrequently absorb, in order for a nuclear reactor to operate.
According to research, the gradient in concentration is directly correlated with the rate of flow of the diffusing substance.
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a proportional-only controller is applied to a stable first-order process with a time constant of 10 minutes. the p controller produces a steady state offset of 0.25 in response to a unit step change in the set-point. to eliminate the offset, it is suggested that a pi controller (with the same proportional gain) be used instead. what is the smallest value of the integral time constant that would guarantee a non-oscillatory closed-loop response under the pi controller?
The correct answer is 10 minutes.
how to calculate the result?The smallest value of the integral time constant that would guarantee a non-oscillatory closed-loop response under a PI controller, in this situation, would be 10 minutes.
A proportional-only controller applied to a stable first-order process with a time constant of 10 minutes will produce a steady state offset of 0.25 in response to a unit step change in the set-point. To eliminate this offset, a PI controller with the same proportional gain can be used instead. In order for the PI controller to produce a non-oscillatory response, the integral time constant must be set to at least the same value as the process time constant (10 minutes in this case).
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if a 25 kva transformer had a primary voltage of 4,800 volts and an output voltage of 240 volts, what would the maximum primary and secondary amperage's be before overload?
The maximum primary and secondary amperage's be before overload :
25 KVA/2400 = 10.4 Amps (Primary)25 KVA/120 = 208.3 Amps (Secondary)50 KVA/4800 = 10.4 Amps (Primary)50 KVA/ 240 = 208.3 Amps (Secondary)What happens when transformer is overloaded?kVA, voltage, and current should be compared to the transformer's nameplate. There probably is an overload if the power consumption exceeds the information on the nameplate.You may argue that the transformer will be overloaded once the temperature rise brought on by loading exceeds the rated rise as specified by the manufacturer. Temperature rise affects a transformer's insulating life to some extent.If the transformer is repeatedly overloaded, the system will deteriorate faster. A weaker insulating system is the end outcome of gradual, minor changes in loading capacity. Overloading leads to overheating, which finally results in thermal deterioration that affects the insulation through fractures.Explanation :
A typical household service might be rated 120/240 volts, 100 amperes. This means at full load the customer requires 100 amps at 240 volts. The power needs would be 240 x 100=24,000 volt amps or 25 kVA. A 25 kVA transformer would easily supply this load. Similarly, a service rated 240 volts; 200 amperes would have a power capacity of 240 x 200 = 48,000 volt amps or 48 kVA and would need a 50 kVA transformer.
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If you are exposed to infected bodily fluid, what should you do after properly washing the area?
Answer:
When you have finished disinfecting it, you should dress it.
Explanation:
Augusta Ada King is famous for
Answer:
Augusta Ada King is famously known for her work on Charles Babbage's early mechanical general-purpose computer, the Analytical Engine.
Explanation:
if this light stays on after the initial startup of the vehicle it signals a warning that there is something wrong with the service brake system. a) vehicle function indicators b) dashboard warning devices c) oil pressure indicator d) coolant temperature indicator e) electrical system indicator f) service brake system indicator
Service brake system indicator is the warning that there is something wrong with the service brake system. Hence option f is correct.
What is indicator?Amber-colored indicator lights can be found at the front, back, and occasionally on the left and right sides of the vehicle. Whether you're turning left, right, or into oncoming traffic, you use your indicators to signal your planned change of direction.
When this light turns on, one of two things will happen. Either the parking brake is engaged or the hydraulic fluid (brake fluid) in the master cylinder is low. Your brakes are made up of a system of hydraulic oil-filled tubes called brake lines.
Thus, service brake system indicator is the warning that there is something wrong with the service brake system. Hence option f is correct.
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