The task is to build a React Native app that can run on Android and iOS that satisfies the following requirements:
Must use React Native for front end, Firebase for the data and backend.
1. Must have a register/login screen. There are 2 types of users that can register. user 1: Supplier. User 2: Retailer.
Supplier must supply their company name, contact, email, company registration number and have a button to upload documents.
Retailer must supply their company name, contact, email, company registration number and have a button to upload documents.
The administrator vets the supplier documents loaded and then approves/declines the supplier based on the documents. If declined, then the supplier receives an email informing them. If approved, then the supplier receives an email informing them and can now uplaod their products to the app.
The retailer once they login goes to a screen that will display a list of suppliers. The retailer can select a supplier. Once the supplier is selected, the retailer can view a screen that gives a stock take number of the amount of stock the supplier has and based on that stock the retailer can select the amount of the item they wish to purchase. Once the amount is selected then they click confirm order.
Once confirmed, the supplier sees that they have an order of the amount selected and can confirm they will process the amount. once confirmed, then the retailer can see that the supplier has confirmed the order. Now based on the amount of the item and the price the supplier has noted their item as will generate an invoivce and automatically send this to the retailer for payment.

Answer:

a building project...

Explanation:

The dependency on hunting decreased from Stone Age to the Bronze Age is because in Bronze Age, people learned to grow crops and keeping domestic livestock, so there was no  reason for hunting.

Stone Age is the age when humans started making tools of stones and used them in hunting and cutting. It was the prehistoric period.

Bronze Age is after the Stone Age where humans know about metals started to use bronze. It is the period between 3300 BC to 1200 BC.

Thus, the dependency on hunting decreased from Stone Age to the Bronze Age is because in Bronze Age, people learned to grow crops and keeping domestic livestock, so there was no  reason for hunting.

Learn more about Bronze Age

https://brainly.com/question/952353

#SPJ1

Answer:

In general, the choice of bridge design will depend on various factors such as the location, the environment, the length of the span, the expected traffic, the budget, and the construction time. Different types of bridges, such as beam bridges, arch bridges, suspension bridges, and cable-stayed bridges, have different strengths and weaknesses, and are suitable for different situations.

Some factors to consider when choosing a bridge design include:

Span: If the river is wide, a longer span bridge such as a suspension or cable-stayed bridge may be required.

Location: The local geology, topography, and environmental conditions may dictate the type of bridge that can be built.

Budget: Some bridge designs are more expensive than others. A beam bridge may be the most cost-effective option.

Traffic: If the bridge will carry heavy vehicles or high volumes of traffic, a stronger, more durable bridge such as a cable-stayed bridge may be required.

Ultimately, the choice of bridge design will depend on a careful evaluation of these factors and the needs of the community. It is important to consult with experts and stakeholders to ensure that the chosen design is safe, effective, and meets the requirements of the project.

Explanation:

ANSWER : PONTOON BRIDGES

OR SUSPENSION BRIDGES

PONTOON BRIDGES:

take a bunch boats or rafts

tie them together

put a path/road on top of them

if a boat can carry a truck then so can a pontoon bridge

armies use them

smaller cost & safe

SUSPENSION BRIDGES:

source of strength its flexibility to wind,gravity, physical considerations

can be made of steel

but even cheaply with rope or jute etc.

When considering the strength in terms of load-bearing capacity and versatility, truss bridges are often considered to be the strongest type of bridge. Truss bridges are made up of interconnected triangles that distribute weight evenly across the structure, making them highly resistant to bending and compression forces. They are also relatively easy to construct using simple materials such as wood or steel, which may make them a more practical option for underserved communities.

That being said, arch bridges can also be quite strong and durable, as they rely on the inherent strength of their curved shape to distribute weight. Suspension and cable-stayed bridges, on the other hand, require more advanced engineering and construction techniques, and may be less feasible for communities with limited resources. Beam bridges are typically the simplest type of bridge, but may not be as strong or versatile as truss or arch bridges.

ChatGPT

The force acting at the point (x, y) can be determined by finding the gradient of the potential energy function U = 3x^5y - 4x. The force vector that acts at the point (x, y) is given by F = (15x^4y - 4) * i + (3x^5) * j.

To find the force vector at the point (x, y) based on the given potential energy function U = 3x^5y - 4x, we need to calculate the gradient of the potential energy function. The gradient is a vector that points in the direction of the steepest increase of a scalar function and has components equal to the partial derivatives of the function with respect to each variable. In this case, the potential energy function U has two variables, x and y. Therefore, the force vector F can be obtained by taking the partial derivatives of U with respect to x and y and combining them into a vector. Let's calculate the force vector F:

First, find the partial derivative of U with respect to x:

∂U/∂x = 15x^4y - 4

Next, find the partial derivative of U with respect to y:

∂U/∂y = 3x^5

Now, construct the force vector F using these partial derivatives:

F = (∂U/∂x) * i + (∂U/∂y) * j

where i and j are the unit vectors along the x and y directions, respectively.

Substituting the partial derivatives, the force vector F is:

F = (15x^4y - 4) * i + (3x^5) * j

Learn more about derivatives here:

https://brainly.com/question/25324584

#SPJ11

Answer:

a) specific work output of the actual turbine is 73.14 Btu/lbm

b) the amount of specific entropy generation during the irreversible process is 0.050416 Btu/lbm°R

c) Isentropic efficiency of the turbine is  70.76%

Explanation:

Given the data in the question;

For an adiabatic turbine; heat loss Q = 0

For Initial State;

p₁ = 120 psia

T₁ = 500°F = 959.67°R

from table; { Gas Properties of Air }

At T₁ = 959.67°R

\(s_1^0\) = 0.74102 Btu/lbm°R

\(h_1\) = 230.98 Btu/lbm

For Finial state;

p₂ = 15 psia

T₂ = 200°F = 659.67°R

\(s^0_{2a\) = 0.64889 Btu/lbm°R

\(h_{2a\) = 157.84 Btu/lbm

we know that R for air is 0.06855 Btu/lbm.R

a)

The specific work output of the actual turbine Wₐ is;

W\(_a\) = \(h_1\)  - \(h_{2a\)

we substitute

W\(_a\) = 230.98 - 157.84

W\(_a\) = 73.14 Btu/lbm

Therefore, specific work output of the actual turbine is 73.14 Btu/lbm

b)

amount of specific entropy generation during the irreversible process.

To determine the entropy generation \(S_{gen\);

\(S_{gen\) = ΔS = \(s_{2a\) - \(s_1\) =  \(s^0_{2a\)  - \(s_1^0\) - R ln(\(\frac{p_2}{p_1}\))

we substitute in our values

\(S_{gen\) = 0.64889 - 0.74102 - 0.06855 ln(\(\frac{15}{120}\))

\(S_{gen\) = 0.64889 - 0.74102 + 0.1425457

\(S_{gen\) = 0.050416 Btu/lbm°R

Therefore, the amount of specific entropy generation during the irreversible process is 0.050416 Btu/lbm°R

c)

Isentropic efficiency of turbine η\(_{is\)

η\(_{is\) = {actual work output] / [ ideal work output ] = (\(h_1\)  - \(h_{2a\) ) / ( \(h_1\)  - \(h_{2s\) )

Now, for an ideal turbine;

ΔS = 0 = \(s_{2s\) - \(s_1\)

so, \(s_{2s\) - s₁  = \(s^0_{2s\) - \(s_1^0\) - R ln(\(\frac{p_2}{p_1}\))

0 =  \(s^0_{2s\) - \(s_1^0\) - R ln(\(\frac{p_2}{p_1}\))

\(s^0_{2s\)  = \(s_1^0\) + R ln(\(\frac{p_2}{p_1}\))

we substitute

\(s^0_{2s\)  = 0.74102 + 0.06855 ln(\(\frac{15}{120}\))

\(s^0_{2s\)  = 0.74102 - 0.1425457

\(s^0_{2s\)  = 0.59847 Btu/lbm°R

Now, from table; { Gas Properties of Air }

At \(s^0_{2s\)  = 0.59847 Btu/lbm°R; \(h_{2s\)  = 127.614 Btu/lbm

η\(_{is\)  = [( \(h_1\)  - \(h_{2a\) ) / ( \(h_1\)  - \(h_{2s\)  )] × 100%

we substitute

η\(_{is\)  = [( 230.98 - 157.84 ) / ( 230.98 - 127.614 )] × 100%

η\(_{is\)  = [ 73.14 / 103.366] × 100%

η\(_{is\)  = 0.70758 × 100%

η\(_{is\)  = 70.76%

Therefore, Isentropic efficiency of the turbine is  70.76%

The specific value of L, you will need the value of the resistance R in the circuit. Once you have R, you can substitute it into the equation to find the required inductance L.

In order for i(t) to be in-phase with υs(t) in the circuit of fig. P7.44, the value of L must be chosen such that the reactance of the inductor (ωL) is equal to the impedance of the resistor (R) at ω = 10^4 rad/s. This is because at this frequency, the circuit behaves purely resistively and the phase difference between the voltage and current should be zero.

Using the impedance formula for a series RL circuit, we have:

Z = √(R^2 + (ωL)^2)

Setting Z equal to R and solving for L, we get:

R = √(R^2 + (ωL)^2)
R^2 = R^2 + (ωL)^2
(ωL)^2 = 0
L = 0

Therefore, the value of L should be zero for i(t) to be in-phase with υs(t) at ω = 10^4 rad/s. However, it is important to note that this is not a practical value for L as it would essentially remove the inductor from the circuit. In reality, a small but non-zero value of L would be used to maintain some level of inductance while still allowing the circuit to behave purely resistively at the desired frequency.

Learn more about value here:

https://brainly.com/question/1578158

#SPJ11

The signal-to-noise ratio (S/N) would be approximately 15.5 if ensemble averaging of 256 spectra is performed.

When taking a single scan of an NMR spectrum and calculating the signal-to-noise ratio (S/N) to be 1.2, it indicates that the signal amplitude is 1.2 times greater than the noise level. However, by performing ensemble averaging of 256 spectra, we can significantly improve the S/N ratio.

Ensemble averaging involves taking multiple spectra and adding them together, effectively increasing the signal while keeping the noise level relatively constant. When averaging a large number of spectra, the signal amplitudes accumulate, resulting in a higher overall signal. On the other hand, the random noise contributions tend to average out due to their statistical nature.

By averaging 256 spectra, the signal will be enhanced by a factor of 256, while the noise will only increase by a factor equal to the square root of 256, which is 16. Therefore, the resulting S/N ratio would be approximately 256/16, or 15.5.

Learn more about signal-to-noise ratio

brainly.com/question/33364647

#SPJ11

Answer:

There are 256 8-bit strings in total, and 128 of them contain at least one "1" (half of the total number of strings).

The worst way to show self-management is to ask your boss to set all your goals. Self-management is the act of managing one's own behavior, time, and resources effectively to reach a goal.

It is the ability to organize oneself and control impulses, emotions, and actions. It is a skill that requires discipline, self-awareness, and commitment. There are different ways to show self-management, but some ways are better than others.Asking your boss to set all your goals is the worst way to show self-management because it shows a lack of initiative and responsibility. It suggests that you are not willing to take ownership of your career or invest in your development. It also implies that you are not confident in your ability to set and achieve your own goals. By asking your boss to set all your goals, you are giving away your power and agency, and relying on someone else to define your success and progress. This approach can be limiting, disempowering, and demotivating.There are better ways to show self-management, such as planting a time to evaluate your progress, setting your own career goals, and asking for feedback on your progress. Planting a time to evaluate your progress is a proactive way to assess your performance and identify areas for improvement. Setting your own career goals demonstrates ambition, vision, and ownership of your future. Asking for feedback on your progress shows a willingness to learn, grow, and adapt to new challenges. These approaches are more empowering, engaging, and effective than relying on your boss to set all your goals.

To know more about self-management visit :

https://brainly.com/question/4574856

#SPJ11

Answer:

(c)

Explanation:

The spray-drying method is the most common approach to produce micro and nanocapsules due to lower production costs than most other processes.

The component in the solar cell that provides electrons to replace the electrons released by the dye is "a layer of graphite"

A layer of graphite will operate as a counter electrode at the glass/electrolyte border, delivering electrons to the solution to replace these electrons that go on to the FTO glass.

They are reintroduced into the cell on a metal electrode on the rear, commonly known as the counter electrode, after passing through the external circuit and flowing into the electrolyte. The electrons are subsequently returned to the dye molecules by the electrolyte, which regenerates the oxidized dye.

PV cells make use of a variety of semiconductor materials. When exposed to light, the semiconductor absorbs the energy and converts it to negatively charged particles in the material known as electrons. This increased energy permits electrons to flow as an electrical current through the material.

Learn more about Solar Cells:
https://brainly.com/question/12053447
#SPJ1

Answer:

Your cat may also be a risk of a taurine deficiency if he or she enjoys sampling your dog's food. Dog food doesn't contain taurine, as dogs can create their own supply of the amino acid. Although your cat may like the taste, a steady diet of dog food is a bad idea

hope this helps

The classification of each cost as part of an overhaul or as an expense depends on the nature of the cost and its purpose in maintaining or restoring the pump's functionality and efficiency.

To classify each cost as part of the overhaul or as an expense, we need to understand the difference between these two concepts.

An overhaul typically refers to a major repair or restoration of an asset, aimed at restoring it to its original or optimal condition. Overhauls are usually planned and performed periodically to extend the life and efficiency of the asset. On the other hand, expenses are costs incurred in the regular maintenance, operation, or replacement of components to keep the asset functioning properly.

Based on this understanding, let's classify each cost mentioned:

1. New pump motor: This cost would be classified as part of an overhaul if it involves replacing a worn-out or inefficient motor to restore the pump's functionality and efficiency. If it is a regular replacement due to wear and tear, it would be classified as an expense.

2. Repacking of bearings (performed monthly): This cost would generally be classified as an expense since it is part of regular maintenance to ensure smooth operation and prevent bearing failure.

3. New impeller (rotating component of a pump): Similar to the pump motor, if replacing the impeller is part of a planned overhaul to restore the pump's performance, it would be classified as an overhaul. If it is a routine replacement due to wear, it would be considered an expense.

4. Painting of pump housing (performed annually): This cost is typically an expense as it is part of routine maintenance and preservation of the pump housing to prevent corrosion and extend its lifespan.

5. Replacement of pump foundation: This cost is likely to be classified as an overhaul expense since it involves major work on the pump's infrastructure and would aim to restore or improve the foundation's stability.

6. New wiring (needed every 5 years): If the replacement of wiring is part of a planned overhaul to upgrade the pump's electrical system, it would be classified as an overhaul. Otherwise, if it is a regular replacement based on a predefined schedule, it would be an expense.

7. Installation labor (motor, impeller, wiring): The labor costs for installing new components would generally be considered part of the overhaul cost since they are directly associated with the restoration or replacement of major parts.

8. Paint labor (performed annually): Similar to the painting cost, the labor required for annual paint maintenance would be classified as an expense since it is part of routine upkeep.

9. Placement of fence around the pump: This cost would be classified as an expense, specifically a compliance expense, as it is necessary to meet the requirements of the Occupational Safety and Health Administration (OSHA) and ensure safety. It does not directly relate to the overhaul or restoration of the pump.

In summary, overhaul costs aim to restore the pump's original condition or improve its performance, while expenses cover regular maintenance, replacements, or compliance-related expenses.

Learn more about efficiency at: brainly.com/question/31458903

#SPJ11

Answer:

4.75m^2

Explanation:

Given:-

- Temperature of hot fluid at inlet:  \(T_h_i = 300\) °C

- Temperature of cold fluid at outlet: \(T_c_o = 120\) °C

- Temperature of cold fluid at inlet: \(T_c_i = 35\) °C

- The overall heat transfer coefficient: U = 1500 W / m^2 K

- The flow rate of cold fluid: m_c = 10,00 kg/ h

- The flow rate of hot fluid: m_h = 5,000 kg/h

Solution:-

- We will evaluate water properties at median temperatures of each fluid using table A-4.

Cold fluid:   Tci = 35°C , Tco = 35°C

                            Tcm = 77.5 °C ≈ 350 K  --- > \(C_p_c = 4195 \frac{J}{kg.K}\)

 Hot fluid:     Thi = 300°C , Tho = 150°C ( assumed )

                             Thm = 225 °C ≈ 500 K --- > \(C_p_h = 4660 \frac{J}{kg.K}\)

- We will use logarithmic - mean temperature rate equation as follows:

                             \(A_s = \frac{q}{U*dT_l_m}\)

Where,

                 A_s : The surface area of heat exchange

                 ΔT_lm: the logarithmic differential mean temperature

                 q: The rate of heat transfer

- Apply the energy balance on cold fluid as follows:

                   \(q = m_c * C_p_c * ( T_c_o - T_c_i )\\\\q = \frac{10,000}{3600} * 4195 * ( 120 - 35 )\\\\q = 9.905*10^5 W\)

- Similarly, apply the heat balance on hot fluid and evaluate the outlet temperature ( Tho ) :

                   \(T_h_o = T_h_i - \frac{q}{m_h * C_p_h} \\\\T_h_o = 300 - \frac{9.905*10^5}{\frac{5000}{3600} * 4660} \\\\T_h_o = 147 C\)

- We will use the experimental results of counter flow ( unmixed - unmixed ) plotted as figure ( Fig . 11.11 ) of the " The fundamentals to heat transfer" and determine the value of ( P , R , F ).

- So the relations from the figure 11.11 are:

                  \(P = \frac{T_c_o - T_c_i}{T_h_i - T_c_i} \\\\P = \frac{120 - 35}{300 - 35} \\\\P = 0.32\)    

                 \(R = \frac{T_h_i - T_h_o}{T_c_o - T_c_i} \\\\R = \frac{300 - 147}{120 - 35} \\\\R = 1.8\)

Therefore,         P = 0.32 , R = 1.8 ---- > F ≈ 0.97

- The log-mean temperature ( ΔT_lm - cf ) for counter-flow heat exchange can be determined from the relation:

                        \(dT_l_m = \frac{( T_h_i - T_c_o ) - ( T_h_o - T_c_i ) }{Ln ( \frac{( T_h_i - T_c_o )}{( T_h_o - T_c_i )} ) } \\\\dT_l_m = \frac{( 300 - 120 ) - ( 147 - 35 ) }{Ln ( \frac{( 300-120 )}{( 147-35)} ) } \\\\dT_l_m = 143.3 K\)

- The log - mean differential temperature for counter flow is multiplied by the factor of ( F ) to get the standardized value of log - mean differential temperature:

                       \(dT_l = F*dT_l_m = 0.97*143.3 = 139 K\)

- The required heat exchange area ( A_s ) can now be calculated:

                     \(A_s = \frac{9.905*10^5 }{1500*139} \\\\A_s = 4.75 m^2\)

If user-supplied input contains certain characters or SQL injection attempts, it can result in errors or potential data loss. It is important to handle user input securely to prevent such vulnerabilities.

a. The given SQL statement intends to retrieve the data from the authors table where the author's first name is 'john' and the author's last name is 'smith'.

b. Assume the forename and surname fields are being gathered from user-supplied input, and suppose the user responds with: Forename: jo'hn Surname:

The above query will generate an error because the single quote will interfere with the SQL syntax. So, it will not retrieve any data and result in an error.

The error could be something like: ERROR: Unclosed quotation mark after the character string 'john'.c. Now suppose the user responds with: Forename: jo'; drop table authors--Surname: smith

The given input will exploit a SQL Injection attack. SQL Injection is a hacking technique that uses a vulnerability in the application's software to execute malicious code. In this case, if the user inputs jo'; drop table authors-- in the forename and smith in surname, then it can lead to data loss.

The SQL command will look like this: SELECT id, forename, surname FROM authors WHERE forename = 'jo'; drop table authors--' AND surname = 'smith';This query will drop the authors table, and all the data from the table will be lost.

Learn more about SQL injection: brainly.com/question/15685996

#SPJ11

Items such as gloves, safety goggles, shoes, earplugs, respirators, hard hats, coveralls, vests, and full body suits are examples of personal protection equipment.

Wearing a safety helmet when using a power tool, donning the proper protective clothing when working with chemicals, and taking all necessary safety precautions when operating machinery are all examples of how to use equipment correctly to safeguard their own health and the health and safety of their coworkers.

Healthcare Facilities Using PPE Gloves shield the hands; gowns or aprons shield the skin or clothing; masks and respirators shield the mouth and nose; goggles shield the eyes; and face shields shield the full face. consisting of goggles, gloves, gowns, shoe covers, head coverings, masks, and respiratory equipment.

PPE, or personal protective equipment, is gear that shields users from harm to their health or the danger of accidents. It may consist of equipment like safety harnesses, gloves, eye protection, high-visibility clothes, safety footwear, and respiratory protective equipment (RPE).

To learn more about health equipment refer to :

https://brainly.com/question/28489100

#SPJ1

Their HVACR technician advises against it because of the residential energy costs from HVAC units.

hat is the cost energy?

Energy Cost is known to be a term that connote the cost of electricity and this is one that is often related to fuel oil, gasoline, heating oil, natural gas, as well as other kinds or source of energy linked to any operation.

Hence, Since family in Florida heard about evaporative coolers as a way to cool their home without the expenses of a refrigerated air conditioning system. Their HVACR technician advises against it because of the residential energy costs from HVAC units.

Learn more about energy costs from

https://brainly.com/question/9821162

#SPJ1

Answer:yes

Explanation:

Because the

Answer:

the h.c.f of 15and20 is 5

Answer:

Use GitHub or stackoverflow for this answer

Explanation:

It helps with programming a lot

Answer:

c. Although PM and FM techniques are classified as angular modulation techniques, they cannot be used interchangeably i.e., modulated with FM and demodulated with PM, and vice versa.

Explanation:

Phase modulation is modulation pattern for conditioning communication signals for transmission. PM signals appears to change frequency with message wave. Both PM and FM are angular modulation techniques. The message in PM wave is captured in phase changes.

Answer: It is  a nominal rate per year

Engineer's approvall makes it appropriate to alter from the drawing

Engineering drawing is a document that contain the design of an engineer represented in a sketch.

deviating fron the drawing is same as deviating from the design. it is therefore necessary to call the engineers attention before altering the drawing.

Read more on Engineering drawing here: https://brainly.com/question/15180981

A series of specialized controller chips known as PIC microcontrollers is made by Microcontroller in Chandler, Arizona. PIC stands for "universal serial controller," albeit this name is no longer often used.

A microcontroller is a small microprocessor used to operate intelligent systems in a variety of devices, including automobiles, robots, office equipment, and small appliances. There are several components that make up a micro, including a Processor, memory, and peripherals.

It's vital to keep in mind that Raspberry Pi is a development board based on a microprocessor (often an ARM Cortex-A Series), and Arduino is a development atmega328p microcontroller on a microcontroller.

To know more about Microcontroller visit:

https://brainly.com/question/14836632

#SPJ4

If elevation effects are neglected, the stagnation pressure is the largest pressure obtainable along a given streamline. The correct option is 1.

The pressure at the point along a streamline when the fluid stops moving is known as stagnation pressure. Therefore, the full amount of kinetic energy is transformed to pressure rise if the elevation effects are disregarded.

Therefore, the stagnation pressure is the highest pressure that may be applied along a given streamline if the elevation effects are ignored.

Therefore, the correct option is 1- The largest pressure obtainable along a given streamline.

To learn more about stagnation pressure, refer to the link:

https://brainly.com/question/19866217

#SPJ9

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

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.

Learn more about Hotel Fire Safety, here:

https://brainly.com/question/4245370

#SPJ4

No, the resistor is not within its tolerance rating.To determine if the resistor is within its tolerance rating, we need to decode the resistor color bands.

The color bands represent the resistance value and tolerance. In this case, the color bands are brown (1), black (0), red (100), and gold (±5%). Using the resistor color code, we can calculate the resistance value as 10 * 100 = 1000 ohms (1 kΩ). The tolerance band indicates that the resistor's actual resistance may vary by ±5%. Therefore, the tolerance range for this resistor would be 950 ohms to 1050 ohms. However, since the voltmeter measures a voltage drop of 6.5 V, we can conclude that the resistor is operating outside its tolerance range.

To know more about tolerance click the link below:

brainly.com/question/31201520

#SPJ11

Answer:

False.

Explanation:

An equi-join is a type of join in which the join condition is based on equality between values in the specified columns in the two tables being joined.

In an equi-join, duplicate columns are not eliminated in the result table. Instead, the result table will contain all the columns from both tables being joined, including any duplicate columns. To eliminate duplicate columns, you would need to explicitly specify which columns to include in the SELECT statement, or use a different type of join such as a natural join or inner join with USING clause.