A process Involves moving speed, load cheight and rate of loading in a conveyor system. The variables are Provided as high (1) and low (0) levels jor digital control. An alarm should be iniated whenever any of the following occurs. (a) Speed is 10w: both weight and loading rate are high (b) Speed is high: loading rate is low (C) Weight is 10w : loading rate is 10 wand speed is also low. find a Boolean equation describing the required Haram output. Let the variables be S jor speed W jor weight and L for loading rate.

Answers

Answer 1

The expression for the required alarm output is \($(S'=0)\cap(W'=1)\cap(L'=1)+(S=1)\cap(L'=0)+(W'=0)\cap(L'=0)\cap(S'=0)$.\)

The process involves moving speed, load height, and the rate of loading in a conveyor system. These variables are given as high (1) and low (0) levels for digital control.

Whenever any of the following occurs, an alarm should be initiated:Speed is low, and both weight and loading rate are high.Speed is high, and loading rate is low.

Weight is low, loading rate is low, and speed is also low.Let the variables be S for speed, W for weight, and L for loading rate.

The following is the Boolean equation describing the required alarm output:

Speed is low and both weight and loading rate are high (i.e., S=0 and W=1 and L=1).

Speed is high and loading rate is low (i.e., S=1 and L=0).(c) Weight is low, loading rate is low, and speed is also low (i.e., W=0 and L=0 and S=0).

After the implementation of the above conditions, we get the following Boolean expression:\($(S'=0)\cap(W'=1)\cap(L'=1)+(S=1)\cap(L'=0)+(W'=0)\cap(L'=0)\cap(S'=0)$\)

The expression for the required alarm output is \($(S'=0)\cap(W'=1)\cap(L'=1)+(S=1)\cap(L'=0)+(W'=0)\cap(L'=0)\cap(S'=0)$.\)

A Boolean equation has been used to define the required alarm output for the given process involving speed, load height, and the rate of loading in a conveyor system.

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Related Questions

If the owner or contractor fail to follow the requirements of the building or fire code, records may be required for use in:Select one:a. employee or subcontractor pay disputes.b. insurance rate increases.c. rezoning claims.d. any legal action.

Answers

If the owner or contractor fails to follow the requirements of the building or fire code, records may be required for use in any legal action that may arise as a result. The correct answer is d. any legal action.

A contractor is an individual or a company that is hired to perform specific work or provide services under a contractual agreement. In the context of construction or building projects, a contractor is responsible for overseeing and managing the execution of the project according to the agreed-upon terms and specifications.

These records can serve as evidence to demonstrate non-compliance with the codes and can be used to support claims, disputes, or legal proceedings related to the violation of building or fire codes. They can be crucial in establishing liability, determining fault, and seeking appropriate remedies or penalties. Therefore, the correct answer is d. any legal action.

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In an international film festival, a penal of 11 judges is formed to judge the best film. At
last two films FA and FB were considered to be the best where the opinion of judges got
divided. Six judges where in favor of FA whereas five in favor of FB. A random sample
of five judges was drawn from the panel. Find the probability that out of five judges,
three are in favor of film FA.Enunciate demerits of classical probability.

Answers

Answer:

International Film Festival

Judging the best best film:

a. The probability that out of five judges (random sample),  three are in favor of film FA is:

= 33%.

b. The demerits of classical probability are:

1. Classical probability can only be used with events that have definite numbers of possible outcomes.  

2. Classical probability can only handle events where each outcome is equally likely.

3. Classical probability is based on the assumption of linear relationship (which is not always true in real life) between the latent variable and observed scores.

Explanation:

a) Number of judges = 11

Number of judges in favor of FA film = 6

Number of judges in favor of FB film = 5

Probability of judges in favor of FA film = 6/11

Probability of judges in favor of FB film = 5/11

Random sample of judges = 5

Probability that out of five judges, three are in favor of film FA = 3/5 * 6/11

= 18/55

= 33%

b) Classical probability is the simple probability showing that each event has equal chance of happening.  It can be contrasted with empirical probability that is obtained from experiments.

4. 7 Problems in this exercise assume that the logic blocks used to implement a processor's datapath have the following latencies: Mom/ Register D. Mom File 250ps 150 ps ALU Adder 25ps 200 ps 150ps Single Register Register gate Read Setup 5ps 30ps 20ps Sign extend Control 50ps 50ps "Register read" is the time needed after the rising clock edge for the new register value to appear on the output. This value applies to the PC only. "Register setup" is the amount of time a register's data input must be stable before the rising edge of the clock. This value applies to both the PC and Register File. 4. 7. 1 (5) <$4. 4> What is the latency of an R-type instruction (1. E. , how long must the clock period be to ensure that this instruction works correctly)? 4. 7. 2 [10] <$4. 4> What is the latency of ld? (Check your answer carefully. Many students place extra muxes on the critical path. ) 4. 7. 3 [10] <$4. 4> What is the latency of sd? (Check your answer carefully. Many students place extra muxes on the critical path. ) 4. 7. 4 (5) <84. 4> What is the latency of beq? 4. 7. 5 (5) <$4. 4> What is the latency of an I-type instruction? 4. 7. 6 (5) <$4. 4> What is the minimum clock period for this CPU?

Answers

The minimum clock period for this CPU should be at least 345 ps.

To determine the latencies and clock period requirements for different instructions in the given exercise, we will consider the provided values for the logic block latencies.

4.7.1:

The latency of an R-type instruction refers to the time required for the instruction to complete its execution. In this case, the R-type instruction consists of register read, ALU operation, and register write. From the given values, we can determine the total latency by summing the latencies of the logic blocks involved:

Latency = Register Read + ALU Adder + Register Write

Latency = 150 ps + 25 ps + 150 ps

Latency = 325 ps

Therefore, the clock period should be at least 325 ps to ensure the correct execution of an R-type instruction.

4.7.2:

The latency of ld (load) instruction represents the time required to complete the load operation, which involves register read, sign extension, ALU operation, and register write. Adding up the latencies of the involved logic blocks:

Latency = Register Read + Sign Extend + ALU Adder + Register Write

Latency = 150 ps + 20 ps + 25 ps + 150 ps

Latency = 345 ps

Thus, the clock period should be at least 345 ps for the correct execution of the ld instruction.

4.7.3:

Similar to the ld instruction, the sd (store) instruction involves register read, sign extension, ALU operation, and register write. Adding up the latencies:

Latency = Register Read + Sign Extend + ALU Adder + Register Write

Latency = 150 ps + 20 ps + 25 ps + 150 ps

Latency = 345 ps

The clock period should be at least 345 ps for the correct execution of the sd instruction.

4.7.4:

The latency of beq (branch equal) instruction involves register read, ALU operation, and control logic. Summing up the latencies:

Latency = Register Read + ALU Adder + Control

Latency = 150 ps + 25 ps + 50 ps

Latency = 225 ps

A clock period of at least 225 ps is required for the correct execution of the beq instruction.

4.7.5:

The I-type instruction refers to the load and store instructions (ld and sd). Since we have already determined their latencies in previous questions:

I-type Instruction Latency = Latency of ld or sd = 345 ps

4.7.6:

The minimum clock period for this CPU would be equal to the highest latency among all the instructions. From the previous calculations, the highest latency is 345 ps.

Therefore, the minimum clock period for this CPU should be at least 345 ps.

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Heat air rises, cools then falls. Air near heat is replaced by cooler air and the cycle repeats

Answers

Heat rises as the particles are further apart and cool air falls as the particles are more intact and are denser so when air is near heat it will cool down and become denser

1. In a safe approach to electrical work,
what should you always do immediately
before touching any electrical conductor?
A. Remove all electrical loads from the
circuit.
B. Check the condition of all circuit
breakers in the load center.
O C. Measure the voltage on the conductor
with a known good meter.
O D. Consult the NEC.

Answers

Answer:

D. Measure the voltage on the conductor with a known good meter

Explanation:

In a safe approach to electrical work,the thing that you should always do immediately before touching any electrical conductor is  C. Measure the voltage on the conductor with a known good meter.

What should be done immediately before touching any electrical conductor?

One should never touch any wires or conductors until you are certain that their electrical supply has been turned off. Circuits must be locked out and marked with a tag to prevent re-energizing them. A conductor is always risky. Before working on a circuit, always test to make sure it is deenergized.

The action you should always do right away before touching any electrical conductor is  the safest approach to electrical work. Use a reputable meter to measure the voltage across the conductor.

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Question 3 of 12
Total dynamic head (TDH) represents the
through the system.

Answers

Answer:Total dynamic head (TDH) represents thethrough the system.

Explanation:

Total dynamic head (TDH) is a term used in engineering and fluid dynamics to represent the total energy or pressure required to move a fluid through a system. It is typically measured in feet or meters and is used to determine the pump requirements for a particular system.TDH takes into account several factors that contribute to the resistance or friction encountered by the fluid as it moves through pipes, valves, fittings, and other components of the system. These factors include elevation changes, pipe lengths, pipe diameters, bends, elbows, fittings, and other obstructions. TDH also includes the pressure required to overcome the static head, which is the vertical height of the fluid column above the pump or reference point.In essence, TDH represents the sum of all the energy losses and gains in a fluid system, and it is used to determine the pump's power requirement to overcome these losses and maintain the desired flow rate. Pump manufacturers provide performance curves that show the relationship between pump flow rate, pump head, and pump power, which can be used to select the appropriate pump for a given system based on the TDH requirement.Understanding the TDH is crucial in designing and sizing pumps for various applications, such as in water supply systems, HVAC systems, wastewater treatment plants, and industrial processes. It allows engineers and designers to accurately calculate the energy requirements and select the right pump for the system to ensure efficient and reliable operation. Properly accounting for TDH helps ensure that the pump operates within its performance range, avoiding issues such as cavitation, insufficient flow, or excessive power consumption. Overall, TDH is a critical parameter in fluid system design and operation, as it represents the total energy required to move a fluid through the system and is used to determine the appropriate pump selection and performance. So, TDH represents the sum of all the energy losses and gains in a fluid system, and it is a key factor in determining the pump requirements for a particular system. It is important for engineers and designers to accurately calculate TDH to ensure that the pump selected is capable of providing the required flow and pressure for the system to function optimally. Proper consideration of TDH helps ensure efficient and reliable operation of the system, preventing issues such as insufficient flow, cavitation, or excessive power consumption. So, TDH is a crucial parameter in fluid system design and operation, and it plays a significant role in the performance and efficiency of the overall system. Proper understanding and calculation of TDH is essential for successful fluid system design and operation in various industrial, commercial, and residential applications. So, TDH is an important concept in fluid dynamics and engineering, and it is widely used in designing and sizing pumps for different applications. Proper calculation and consideration of TDH helps ensure efficient and reliable operation of fluid systems, preventing issues such as cavitation, insufficient flow, or excessive power consumption. Overall, TDH is a critical parameter in fluid system design and operation, and it is essential for engineers and designers to accurately calculate TDH to ensure optimal performance of fluid systems. So, TDH is an important concept in fluid dynamics and engineering, and it is widely used in designing and sizing pumps for different applications. Proper calculation and consideration of TDH helps ensure efficient and reliable operation of fluid systems, preventing issues such as cavitation, insufficient flow, or excessive power consumption. Overall, TDH is a critical parameter in fluid system design and operation, and it is essential for engineers and designers to accurately calculate TDH to ensure optimal performance of fluid systems. So, TDH is an important concept in fluid dynamics and engineering, and it is widely used in designing and sizing pumps for different applications. Proper calculation and consideration of TDH helps ensure efficient and reliable operation of fluid systems, preventing issues such as cavitation

Consider steady flow of air through the device shown below (assume inviscid,
incompressible flow). The exit velocity is 100 ft/s and the differential pressure across the
nozzle upstream is 6 lb/ft?. Based on this information, determine (a) the height H of the water
in the manometer attached to the Pitot tube, and (b) the diameter d of the nozzle.

Consider steady flow of air through the device shown below (assume inviscid,incompressible flow). The

Answers

Answer:

im not for sure

Explanation:

If the circuit current is 3 A, what is the value of R3?

72 volts
R1= 36Ω
R2= 50 Ω
R3=?

If the circuit current is 3 A, what is the value of R3?72 voltsR1= 36R2= 50 R3=?

Answers

Answer:

22 Ω

Explanation:

0) to re=write the given schema;

1) to write common equation of U[V];

2) to calculate the value of the current I₁ [A];

3) to write the common equation of current I [A];

4) to calculate the value of the current I₂₃ [A];

5) to calculate the value of R₃ [Ω] using the common equation of U.

If the circuit current is 3 A, what is the value of R3?72 voltsR1= 36R2= 50 R3=?

If a circuit produces a phase shift of 45 degrees between the voltage and current curves and the apparent power is 100 VA, what is the TRUE power in the circuit?


50 W


70.7 VA


70.7 W


100 A

Answers

The true power is obtained as 70.7 VA.

What is the true power?

We define the power a the rate of doing work, we know that the power in a circuit is the product of the current and the voltage. In this case, we want to find the true power thus we have to involve the use of the phase shift in degrees.

Thus;

True power = PcosΦ

P =  100 VA

Φ = 45 degrees

True power =  100 VA * cos 45 degrees

True power = 70.7 VA

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The cut made by a saw is called a(n)

Answers

It is called a Kerf

Hope it helps! :)

Looking at the diagram, which vehicles are required to stop for the school bus (red) on a two lane road?
A, B & C
A only
B & C

Answers

No matter how many traffic lanes or if a turn lane is present, drivers in both directions of a two- or multi-lane highway are required to stop and remain stopped until the flashing red bus lights are turned off.

Only lanes of traffic moving in the same direction as the school bus must come to a complete stop. To get to their home, students shouldn't have to cross four or more lanes of traffic. The school bus had to stop. To get to their home, students shouldn't have to cross four or more lanes of traffic. On a two-lane road, when a school bus stops and flashes its red lights, traffic coming from either direction must stop before passing the bus. on multilane roads. on roadways with dividers.

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If you are exposed to potentially infectious material via a sharps injury, what should you do immediately?
select the best option.

get the blood tested before washing it away.


report the injury.


wash the area with soap and water.


blot the area with a dry tissue.

Answers

Answer:

Soap and water

Explanation:

   then report the injury....

The starting device usually used on single phase, fractional horsepower motors requiring low starting torque is the

Answers

The starting device usually used on single-phase, fractional horsepower motors requiring low starting torque is the current relay.

How tons cutting-edge relay is wanted energized?

This is the minimal cutting-edge, the relay expects to float thru the now shorted contacts whilst the relay is became on (forty mA). The load may be much less than that too however relay won't stay sufficient for range of cycles of operation referred to withinside the information sheet. The minimum running voltage to your precise relay is 3. seventy-five V.

A cutting-edge relay is a kind of electromagnetic transfer used as a part of the manipulating structures for electric equipment. These relays are generally used as sensors (cutting-edge sensor/tracking relays) to screen cutting-edge float inside the business and different safety-touchy equipment current beginning relays are used on single-phase, fractional horsepower cars requiring low beginning torque.

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An algorithm that is given the length and width, in feet, of a rec�tangular carpet and determines its total cost given that the mater�ial cost is $23/square yard. PRACTICE PROBLEMS Algorithm for Computing Average Miles per Gallon FIGURE 2.3 Average Miles per Gallon Algorith

Answers

An algorithm that can be used to determine the total cost of a rectangular carpet, given the length and width, and the material cost, is shown below.

Which algorithm shows the total cost?

In order to calculate the cost of a rectangular carpet when given the material cost as $23 per square yard, and the length and width is:

COST_PER_SQUAREYARD=23

Read length;

Write "Enter lenght of the carpet"

Read width;

Write "Enter width the carpet"

carper_area_in_feet=lenght*width;

//Conversion from feet to yards by dividing the feet by 3

//1yard=3feet

carper_area_in_yard=lenght*width/3;

carpet_cost=carpet_area_in_yard*COST_PER_SQUAREYARD;

due_amount=total_cost_in_yard+tax;

Write "Total carpert cost of 23 $ per square yard:"

Write carpet_cost

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Moist air initially at 1258C, 4 bar, and 50% relative humidity is contained in a 2.5-m3 closed, rigid tank. The tank contents are cooled. Determine the heat transfer, in kJ, if the final temperature in the tank is (a) 1108C, (b) 308C

Answers

To determine the heat transfer in the given scenario, we can use the psychrometric chart and the principles of heat transfer.

(a) For a final temperature of 1108C, we need to cool the moist air inside the tank. As the air cools, its relative humidity will increase. From the psychrometric chart, we can find the change in specific enthalpy (h) between the initial and final states of the air. The heat transfer (Q) can be calculated using the formula:

Q = m * (h2 - h1),

where m is the mass of the air inside the tank.

(b) For a final temperature of 308C, the process involves cooling the air further, causing condensation to occur. This results in the release of latent heat of vaporization. The heat transfer can be calculated using the same formula mentioned above, considering the change in enthalpy due to both sensible and latent heat effects.

To determine the exact value of heat transfer in kJ, we need additional information such as the mass of the air inside the tank and the specific enthalpy values from the psychrometric chart at the given temperatures and pressures.

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Nuclear engineer Meena Mutyala argues that nuclear power is an environmentally _____ technology, operating with essentially no emissions. A hostile; B culpable

Answers

A. friendly

Nuclear engineer Meena Mutyala argues that nuclear power is an environmentally friendly technology, operating with essentially no emissions.

What is Nuclear ?

Nuclear is the process of splitting atoms to release energy. This energy is produced when the nucleus of an atom splits, either naturally or through a man-made process. During this process, a significant amount of energy is released as heat, light and radiation. Nuclear energy has been used in various ways, including electricity generation, medical treatments, research and industrial applications.

Nuclear energy is considered a clean, renewable source of energy, as it does not produce any greenhouse gases when it is used. However, it does come with some risks, including the potential for radiation leaks and the development of nuclear weapons. Additionally, nuclear waste must be disposed of safely, which can be difficult and expensive.

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if the old radiator is replaced with a new one that has longer tubes made of the same material and same thickness as those in the old unit, what should the total surface area available for heat exchange be in the new radiator to achieve the necessary heat exchange rate at the recommended temperature gradient?

Answers

First of all, we need to find the total surface area of the old radiator which is; 3/2* area of old radiator.

From the question that we have been given,

We can say that the Thermal conductivity is the same for both radiators.

We can use the following formula to get the surface area of the new radiator;

K = Q/A*ΔT

change in T =  ΔT

So, we can say the surface area for the new radiator is 3/2* area of the old radiator.

A heat exchanger

This is a heat transfer device, usually used to in transferring heat from one source to another and eventually to a working fluid. This heat exchangers are very vital in the cooling and heating processes. The fluids can be separated to avoid mixing. They are normally in many places such as, refrigeration, space heating, power plants etc.

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A model of living systems as whole entities which maintain themselves through continuous input and output from the environment, developed by ludwig von bertalanffy is known as?

Answers

A model of living systems as whole entities which maintain themselves through continuous input and output from the environment, developed by ludwig von bertalanffy is known as Systems theory.

what are the application of systems theory?

It is a theoretical framework to understand the working mechanism of an organization.

It is an entity where all the elements necessary to carry out its functions.

A computer is the best  example of showing the mechanism of system theory.

computer is a system which has many smaller sub-systems that have to work in coordinated manner.

These sub-systems are the processor, RAM, motherboard, hard drive and power supply.

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how to design an attractive wearable redux mini case solution

Answers

To design an attractive wearable Redux mini case solution, one should focus on the product's functionality, aesthetic, and comfort while keeping the manufacturing cost reasonable.

The Redux mini case solution should provide easy access to the wearable device's ports and buttons. It should be lightweight, compact, and durable. The design should incorporate modern and attractive patterns while keeping the device's user and the design's target audience in mind. To make it comfortable, the case solution should be breathable and made of materials that won't cause any irritation. The production cost should be affordable while maintaining the quality standards. The material selection, color combination, and branding options should be carefully chosen to create an excellent customer experience and a loyal customer base.

Simply put, Redux is used to maintain and update data across multiple components in your applications without interfering with the components themselves.

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If an AC circuit contains both resistive and capacitive components, w
A. Voltage will lead the current in the circuit.
B. The resistance will allow all current to bypass the
circuit's capacitive con
C. Current will lead the voltage in the circuit.
D. The circuit's peak-to-peak voltage level will be reduced by the capacitive
Component

Answers

Answer:

C. Current will lead the voltage in the circuit.

Explanation:

The correct option is - C. Current will lead the voltage in the circuit.

Reason -

In the Resistive Capacitive load , current will lead the voltage by 90° .

So, the correct option is Current will lead the voltage in the circuit.

The term route of entry on an SDS refers to the way a _____ enters the body

Answers

Answer:

No matter what u post on a football page, some fatherless dude will either say "pessi" or "penaldo"

The term route of entry on an SDS refers to the way a _____ enters the body

Which characteristic would atoms of a ferromagnetic material have?A. A lack of electrons B. North and south poles C. A temporary magnetic field D. The ability to attract nonmagnetic materials

Answers

Answer:

Option B

Explanation:

Atoms of ferromagnetic materials have north and south pole but these atoms are oriented in random directions due to which they do no exhibit magnetic properties until unless they are brought into influence of any external temporary or permanent magnetic field.

Under the influence of external magnetic force, the atoms of the ferromagnetic material get oriented in a particular direction.

Hence, option B is correct

Why is electrical power transmitted at such high voltages in large distribution systems?.

Answers

Answer:

Increase efficiency

Explanation:

I come from a family of electricians

Hotel Fire Safety Directors shall do all EXCEPT:

A. train and supervise Fire Brigade
B. conduct fire drills
C. order full building evacuation of guests
D. distribute applicable parts of the Fire Safety Plan to all employees

Answers

Hotel Fire Safety Directors are not authorized to order a full building evacuation of guests. Therefore, option (C) is correct.

Who are Hotel Fire Safety Directors?

Hotel Fire Safety Directors are individuals who are responsible for ensuring the safety of guests and employees in the event of a fire emergency in a hotel or other hospitality establishment.

They are typically appointed by the hotel management and must have knowledge of fire safety regulations and protocols, as well as the ability to lead and manage a team during an emergency.

Hotel Fire Safety Directors are responsible for implementing and maintaining the Fire Safety Plan, which includes conducting fire drills, training and supervising the Fire Brigade, and distributing applicable parts of the Fire Safety Plan to all employees. They must also work closely with the local fire department to ensure compliance with local fire safety regulations and protocols.

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To measure an object accurately, what point on the ruler would you align with the object edge

Answers

Answer:

Along the zero to measure an object on a ruler

The zero to measure an object

An electrochemical cell is composed of pure copper and pure cadmium electrodes immersed in solutions of their respective divalent ions. For a 6.5 × 10-2 M concentration of Cd2+, the cadmium electrode is oxidized, yielding a cell potential of 0.775 V. Calculate the concentration of Cu2+ ions if the temperature is 25°C.

Answers

From the calcuation, the concentration of the copper II ion is 0.98 M.

What is an electrochemical cell?

An electrochemical cell is one in which current is produced by means of a chemical reaction. In this cell, the cell reaction is;

Cd(s) + Cu^2+(aq) ----> Cd^2+(aq) + Cu(s)

E°cell = 0.34 V - (-0.40V) = 0.74 V

Using the Nernst equation;

0.775= 0.74 - 0.0592/2 log(6.5 × 10-2)/[Cu^2+]

0.775 - 0.74 =  - 0.0592/2 log(6.5 × 10-2)/[Cu^2+]

0.035 = -0.0296 log(6.5 × 10-2)/[Cu^2+]

0.035 /-0.0296 = log(6.5 × 10-2)/[Cu^2+]

-1.18 =  log(6.5 × 10-2)/[Cu^2+]

Antilog (-1.18) = (6.5 × 10-2)/[Cu^2+]

0.066= (6.5 × 10-2)/[Cu^2+]

[Cu^2+] =  (6.5 × 10-2)/0.066

[Cu^2+] =0.98 M

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Both copper and stainless steel are being considered as a wall material for a liquid cooled rocket nozzle. The cooled exterior of the wall is maintained at 150°C, while the combustion gases within the nozzle are at 2750°C. The gas side heat transfer coefficient is known to be hᵢ = 2×10⁴ W/m²-K, and the radius of the nozzle is much larger than the wall thickness. Thermal limitations dictate that the temperature of copper must not exceed 540°C, while that of the steel must not exceed 980°C. What is the maximum wall thickness that could be employed for each of the two materials? For Cu, ρ = 8933 kg/m³, k = 378 W/m-K and for stainless steel, ρ = 7900 kg/m³, k = 23.2 W/m-K

Answers

a. The maximum thickness of the copper nozzle is 3.3 mm

b. The maximum thickness of the steel nozzle is 0.054 mm

The question has to do with heat transfer

What is heat transfer?

Heat transfer is the movement of heat energy from one body to anotrher.

How to calculate the maximum wall thickness?

Since the rate of heat loss by the gas equal rate of heat gain by the metal.

Rate of heat loss by gas

The rate of heat loss by gas is P = -hA(T - T') where

h = heat transfer coefficient of gas = 2 × 10⁴ W/m²-K, A = surface area of nozzle, T = maximum temperature of metal and T = Temperature of gas = 2750°C

Rate of heat gain by metal

The rate of heat gain by metal is given by P' = kA(T - T")/t where

k = thermal coefficient of metal, A = surface area of nozzle, T = maximum temperature of metal, T" = temperature of exterior wall of nozzle = 150°C and t = thickness of nozzle.

Maximum thickness of nozzle.

Since P = P', we have that

-hA(T - T') =  kA(T - T")/t

Making t subject of the formula, we have

t = -k(T - T")/h(T - T')

a. Maximum thickness for copper nozzle

Given that for copper

T = 540°C and k = 378 W/m-K

Substituting the values of the variables into t, we have

t = -k(T - T")/h(T - T')

t = -378 W/m-K(540°C - 150°C)/[2 × 10⁴ W/m²-K(540°C - 2750°C)]

t = -378 W/m-K(390°C)/[2 × 10⁴ W/m²-K(-2210°C)]

t = 147420 W/m/4420 × 10⁴ W/m²

t = 147420 W/m/44200000 W/m²

t = 0.0033 m

t = 3.3 mm

So, the maximum thickness of the copper nozzle is 10.71 cm

b. Maximum thickness for steel nozzle

Given that for steel

T = 980°C and k = 23.2 W/m-K

Substituting the values of the variables into t, we have

t = -k(T - T")/h(T - T')

t = -23.2 W/m-K(980°C - 150°C)/[2 × 10⁴ W/m²-K(980°C - 2750°C)]

t = -23.2 W/m-K(830°C)/[2 × 10⁴ W/m²-K(-1770°C)]

t = 19256 W/m/3540 × 10⁴ W/m²

t = 19256 W/m/35400000 W/m²

t = 0.0000544 m

t = 0.0544 mm

t ≅ 0.054 mm

So, the maximum thickness of the steel nozzle is 0.054 mm

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what are the safe methods of lifting heavy objects?

Answers

Safe methods of lifting heavy objects are

Using your legs to lift, keeping the object close to your body, and avoiding twisting your body while lifting.

The process of lifting objects can be dangerous. This is particularly true when it comes to heavier objects. It can result in severe back, shoulder, and even spinal cord injuries. Lifting injuries are common in the workplace, but they can occur anywhere.

There are a variety of ways to lift heavy objects that can help you avoid injury. Here are some safe methods for lifting heavy objects:

Use your legs: You should use your legs, not your back, to lift heavy objects. Squat down, rather than bend over. Maintain a straight back, then use your legs to lift the object up.Push or Pull: When pushing or pulling an object, you should use your entire body. Don't just rely on your arms. Be sure your feet are secure and use your legs to provide additional force.Straddle: If you can't avoid lifting a heavy object, you should consider straddling it. With your legs apart and knees bent, lower yourself and lift the object slowly. This will put less strain on your back and reduce the likelihood of injury.Consider the weight: It's important to assess the weight of the object before lifting it. If the weight exceeds your lifting ability, seek assistance. Never put yourself in danger by lifting something that is too heavy for you.

In conclusion, lifting heavy objects is a task that necessitates caution and knowledge of safe lifting practices. When it comes to lifting heavy objects, the most important thing is to use your legs, push or pull with your entire body, consider straddling the object, and assess the weight before lifting it. Following these methods can help you avoid injuries and keep you safe.

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Tech A says that it is best to use a knife or other type of sharp tool to cut away the insulation when
stripping a wire Tech B says that any issues with wing are more likely to be with the terminals than
with the wires themselves. Who is correct?

Answers

Tech A because it is best to use a knife

Which statement best describes how power and work are related?
O A. Power is the ability to do more work with less force.
O B. Power is a measure of how quickly work is done.
O C. Power and work have the same unit of measurement
O D. Power is the amount of work needed to overcome friction.
Pls answer quick

Answers

B

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