A glider reduces weight by dumping water ballast. A ten per cent reduction in weight would give:A) a ten per cent increase in best glide angle.B) a five per cent reduction in best glide angle.C) a decrease in best rate of descent.D) no change in best rate of descent.

Answer:

See attachment for chart

Explanation:

The IPO chart implements he following algorithm

The expressions in bracket are typical examples

Input

Input Number (5, 4.2 or -1.2) --- This will be passed to the Processing module

Processing

Assign variable to the input number (x)

Calculate the square (x = 5 * 5)

Display the result (25) ----> This will be passed to the output module

Output

Display 25

When reporting stress test results, the following information is necessary to record:

Test scenario: This includes details about the test environment, such as the type of hardware and software used, the network topology, the number of users or transactions, and the duration of the test.

Metrics: These are the performance measurements recorded during the test, such as response time, throughput, error rate, and resource utilization. It is important to record these metrics for different load levels, such as minimum, average, and peak load.

Bottlenecks: This includes the identification of the components that caused performance degradation or failures during the test, such as the application server, database, network, or load balancer. It is important to record the location, severity, and impact of these bottlenecks.

Remediation actions: This includes the steps taken to address the bottlenecks, such as configuration changes, hardware upgrades, or software patches. It is important to record the effectiveness of these actions and whether they resolved the performance issues.

Recommendations: This includes the suggestions for improving the performance, scalability, and reliability of the system, such as optimizing the code, improving the database design, or adding more resources. It is important to prioritize these recommendations based on their impact and feasibility.

Conclusion: This includes the overall assessment of the system's performance and readiness for production, based on the stress test results and analysis. It is important to highlight any risks or limitations identified during the test and to provide a clear recommendation for next steps.

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Answer:

A) For a double drainage system the time taken for total settlement will differ from that of a single drainage system, because in a double drainage case clay water escapes from both sides unlike in a single drainage case. hence water and air will be be expulsed faster for a double drainage making it attain  total settlement faster.

B) for only single = 12 years

Explanation:

Given data :

ultimate clay settlement = 32 cm

settlement of clay in 3 years = 7.5 cm

Cv ( coefficient of consolidation ) =  1.5 x 10^-4 cm^2 /s

A) For a double drainage system the time taken for total settlement will differ from that of a single drainage system, because in a double drainage case clay water escapes from both sides unlike in a single drainage case. hence water and air will be be expulsed faster for a double drainage making it attain  total settlement faster.

note : Total settlement is the same in both drainage system.

B) Determine how long it will take for 7.5 cm of settlement to occur if there is only single

applying the relation  below

Tv = Cv t / H^2

where Tv = time factor , d = thickness of layer , H = drainage path

Given that Tv and Cv are constant in both cases

t ∝ H^2   hence

\(\frac{t1}{t2} = \frac{H^21}{H^22}\)  ------ ( 1 )

t1 = time for single drainage for d meters , t2 = time for double drainage  for d meters

equation 1 can be rewritten as

t1/t2 = d^2 / (d/2)^2

∴ t1 = 4t2

given that t2 = 3 years ( value gotten from question )

t1 = 4 * 3 = 12 years

Solution :

import \($\text{java}.$\)util.*;

public \($class$\) currency{

  public static \($\text{void}$\) main(String\($[]$\) args) {

      Scanner input \($=$\) new Scanner(System\($\text{.in}$\));

      System\($\text{.out.}$\)print("Enter \($\text{number of}$\) quarters:");

      int quarters = input.nextInt();

      System.out.print("Enter number of dimes:");

      int \($\text{dimes =}$\) input.nextInt();

      System\($\text{.out.}$\)print("Enter number of nickels:");

      int nickels = input.nextInt();

      System\($\text{.out.}$\)print("Enter number of pennies:");

      int \($\text{pennies = }$\) input.nextInt();

      // computing dollors

      double dollars = (double) ((quarters*0.25)+(dimes*0.10)+(nickels*0.05)+(pennies*0.01));

      System\($\text{.out.}$\)format("You have : $%.2f",dollars);

  }

}

Answer:

The answer is below

Explanation:

The mining auxiliary operations in underground mining involve various activities that are important for a successful mining operation particularly in the areas of productive operating conditions.

The activities involved in the auxiliary operations in underground mining include the following: ventilation, haulage, drainage, power supply, lighting, delivery of compressed air, water, supplies to the working sections, and communications.

The person class is an illustration of constructors;

In computer programs, constructors are automatically called when the object of a class is created

The class and the constructor program written in C++ programming language is as follows:

int main(){

   string fname, lname,dob,idno,mobileno;

   cin>>lname; cin>>fname; cin>>dob;  cin>>idno; cin>>mobileno;

Person c(fname,lname,dob,idno,mobileno);

if(mobileno.length() == 12){

    if(mobileno[3] == '-' && mobileno[7] == '-'){

        cout << "Name: " << c.getfname() << " " << c.getlname() << endl

 << "Date of birth: " << c.getdob() << endl

 << "ID number: " << c.getid() << endl

 << "Mobile: " << c.getmobile() << endl

 << "Age: "<< getAge(dob)<<endl;

 ;

    }

}

The complete program is added as an attachment

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Answer:

It is known as (PCS)

Explanation:

That sounds a lot like:

(aka. a stylized picture of an object representing a word, syllable, or sound, as found in ancient Egyptian and other writing systems.)

Answer:

The power cost savings for the 8 inches pipe offsets the increased cost for the pipe therefore to save costs the 8-inch pipe should be used

Explanation:

The given parameters in the question are;

The distance of the river from the the site, d = 2,500 ft.

The planned flow rate = 600 gal/min

The diameter of the pipe, d = 6-in.

The pipe material = Steel

The cost of pumping = 3 cents per kilowatt-hour

The Bernoulli's equation is presented as follows;

\(\dfrac{P_a}{\rho} + g\cdot Z_a + \dfrac{V^2_a}{2} + \eta\cdot W_p = \dfrac{P_b}{\rho} + g\cdot Z_b + \dfrac{V^2_b}{2} +h_f +W_m\)

\({P_a} = {P_b} = Atmospheric \ pressure\)

\(Z_a = Z_b\)

Vₐ - 0 m/s (The river is taken as an infinite source)

\(W_m\) = 0

The head loss in 6 inches steel pipe of at flow rate of 600 gal/min = 1.19 psi/100 ft

Therefore; \(h_f\) = 1.19 × 2500/100 = 29.75 psi

\(\eta\cdot W_p = \dfrac{V^2_b}{2} +h_f\)

\(V_b\) = Q/\(A_b\) = 600 gal/min/(π·(6 in.)²/4) = 6.80829479 ft./s

\(V_b\) ≈ 6.81 ft./s

The pressure of the pump = P =  62.4 lb/ft³× (6.81 ft./s)²/2 + 29.75 psi ≈ 30.06 psi

The power of the pump = Q·P ≈ 30.06 psi × 600 gal/min = 7,845.50835 W

The power consumed per hour = 7,845.50835  × 60  × 60 W

The cost = 28,243.8301 kW × 3  = $847.31  per hour

Annual cost =  $847.31 × 8766 = $7,427,519.46

Pipe  cost = $15/ft × 2,500 ft = $37,500

Annual charges = 20% × Installed cost = 0.2 × $37,500 = $7,500

Total cost = $37,500 + $7,500 + $7,427,519.46 = $7,475,519.46

For the 8-in pipe, we have;

\(V_b\) = Q/\(A_b\) = 600 gal/min/(π·(8 in.)²/4) = 3.83 ft./s

\(h_f\) = 1.17 ft/100 feet

Total head loss = (2,500 ft/100 ft) × 1.17 ft. = 29.25 ft.

\(h_p = \dfrac{V^2_b}{2 \cdot g} +h_f\)

∴ \(h_p\) = (3.83 ft./s)²/(2 × 32.1740 ft/s²) + 29.25 ft. ≈ 29.5 ft.

The power of the pump = ρ·g·h × Q

Power of pump = 62.4 lb/ft³ × 32.1740 ft/s² × 29.5 ft.× 600 gal/min = 3,363.8047 W

The cost power consumed per annum = 3,363.8047 W × 60 × 60 × 3 × 8766 = $3,184,608.1

The Cost of the pipe = $20/ft × 2,500 ft. = $50,000

The total cost plus charges = $3,184,608.1 + $50,000 + $10,000 = $3,244,608.1

Therefore it is more affordable to use the 8-in pipe which provides substantial savings in power costs

Answer:

Environmental Protection Agency (EPA)

Explanation:

Pollution can be defined as the physical degradation or contamination of the environment through an emission of harmful, poisonous and toxic chemical substances.

Environmental Protection Agency (EPA) is the organization that oversees environmental compliance.

In the United States of America, the agency which was established by US Congress and saddled with the responsibility of overseeing all aspects of pollution, environmental clean up, pesticide use, contamination, and hazardous waste spills is the Environmental Protection Agency (EPA). Also, EPA research solutions, policy development, and enforcement of regulations through the resource Conservation and Recovery Act.

Hence, the Environmental Protection Agency (EPA) is the governmental agency set up to ensure that various industries, factories and people comply with laws and regulations concerning the environment.

Answer:

EPA

Explanation:

Answer: C

Explanation:

The motor will spin at around 2090 rpm and have a power factor of 1.0 when it is attached to a 230 V, 50 Hz power source and draws the same amount of armature current.

To estimate the speed and power factor of the motor when connected to a 230 V, 50 Hz supply drawing the same armature current, we need to use the following steps:

Calculate the armature resistance and reactance:

R = 20 Ω

X = 2πfL = 2π(50)(0.4) ≈ 125.6 Ω

Calculate the impedance of the armature circuit:

Z = √(R² + X²) ≈ 126.8 Ω

Calculate the voltage across the armature circuit:

V = IZ = (1.0 A)(126.8 Ω) ≈ 126.8 V

Calculate the speed of the motor:

The speed of a universal motor is proportional to the applied voltage, so we can use the following formula:

N₂/N₁ = V₂/V₁

where N₁ and V₁ are the original speed and voltage, and N₂ and V₂ are the new speed and voltage.

N₂/N₁ = 230/220 = 1.045

Therefore, the new speed of the motor is:

N₂ = (1.045)(2000 rpm) ≈ 2090 rpm

Calculate the power factor of the motor:

The power factor of a universal motor can be calculated using the following formula:

cos(φ) = P/Efficiency * V * I

where P is the power consumed by the motor, Efficiency is the efficiency of the motor, V is the voltage across the motor, and I is the current drawn by the motor.

We don't know the efficiency of the motor, but we can assume it's constant for both cases, so we can simplify the formula to:

cos(φ) = P/(V * I)

The power consumed by the motor can be calculated as:

P = V * I * cos(φ)

We can rearrange this formula to get:

cos(φ) = P/(V * I) = (V * I * cos(φ))/(V * I) = cos(φ)

Therefore, the power factor of the motor is:

cos(φ) = cos(φ) = 1.0

So, when the motor is connected to a 230 V, 50 Hz supply drawing the same armature current, it will run at approximately 2090 rpm and have a power factor of 1.0.

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Answer:

a) unchanged

b) unchanged

c) Increase

d) Increase

e) unchanged

f ) Increase

g)  unchanged

h) decrease

i) unchanged

Explanation:

Determine how and why  the power increases, decreases, or remains unchanged

a) The reactor been deformed will not cause an increase in power i.e. power remains unchanged and this is because power change/generated does not depend on dimension

b) No change will happen to the power ( Unchanged )

c) When the temperature of the core is raised the power increases and this is because of the increase in bombarding of particles causing an increase in charge particle

d) When a neutron source is brought close to the core the power will increase and this is because the presence of more neutron in the core results to an increase in energy released ( more power will be generated )

e) An energetic electron beam impacting the core will not cause an increase in power ( reason been that it is lighter than neutron ) power unchanged

f )  When the reactor is run at a high power there would be an increase in power generated

g) When the core is launched into outer space the power generated remains unchanged

h) when a sheet of Cadmium is wrapped around the core the power generated will be decreased ( reason : Cadmium can absorb neutrons thereby reducing reaction)

i) Increase in the enrichment of the fuel will not cause an increase in the power generated but it will sustain the reaction ( unchanged power )

Solution :

It is given that :

Thermal coefficient = 0.0045/K

Ambient temperature, \($T_a = 25 - 40^\circ$\)

air velocity, v = 0-5 m/s

Solar radiation, \($G= 400-100 \ W/m^2$\)

\($P=50 \ W$\)

Model calculations :

Cell temperature (\($T_c$\))

\($T_c = T_a + \left(\frac{0.25}{5.7+3.8 \ v_w}\right) G$\)

where \($ v_w - v_a = $\) wind speed / air speed

∴ \($T_c = 2 \pi + \left(\frac{0.25}{5.7+3.8 \times 1}\right) \times 400$\)

   \($T_c = 35.526 ^\circ$\)

\($\Delta T = T_c -25$\)

      = 35.526 - 25

      = 10.526 K

Thermal coefficient = 0.0045 x 10.526

                                = 0.04737

Pv power = \($(1 -C_T) \times P \times \frac{G}{1000}$\)

                \($=(1 -0.04737) \times 50 \times \frac{400}{1000}$\)

                = 17.0526 W

Answer: A sample of the representative outcomes or sequences of events for all possible consequences of a model is called a scenario.

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The graph of the linear function f(t) = 2t + 5 is a line which is shown below.

The missing question is given below.

Plot the function f(t) = 2t + 5 over the interval [-5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5]

A statement, principle, or policy that creates the link between two variables is known as a function.

The function is a linear function.

f(t) = 2t + 5

The interval is given below.

[-5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5]

The end points of the function will be

At t = -5, then the value of the function will be

f(t) =  2 × -5 + 5

f(t) = -5

At t = 5, then the value of the function will be

f(t) = 2 × 5 + 5

f(t) = 15

Then the graph of linear system.

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Answer:

18 000 liters

Explanation:

Mass flow rate = volumetric flow rate x density of air at that elevation

M = 0.3m3/min x 0. 7kg/m3 = 0.21kg/min

min diameter of fan = 0.063m

the velocity V must not exceed 95m/min,

Using Q = AV

A is the surface area of the fan

Q = 0.3m3/min, from above

A = Q/V = 0.3/95 = 0.003157m2

But A = (¶d^2)/4

d^2 = 4A/¶ = 4 x 0.003157/3.142

d^2 = 0.004019

d = 0.063m

The combined efficiency of the fan–motor unit to be used can be taken to be 50 percent. If the fan is to replace the entire volume of air in 15 min, determine the wattage of the fan–motor unit to be purchased.

Mass flow rate = volumetric flow rate x density of air at that elevation

M = 0.3m3/min x 0. 7kg/m3 = 0.21kg/min

min diameter of fan = 0.063m

the velocity V must not exceed 95m/min,

Using Q = AV

A is the surface area of the fan

Q = 0.3m3/min, from above

A = Q/V = 0.3/95 = 0.003157m2

But A = (¶d^2)/4

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The statements which correctly identify the addressing that serverB will generate in the process are:

Define the MAC address.

Each device on a network is identified only by its Media Access Control address (MAC address), which is a hardware identification. The maker assigns it mostly. On the network interface controller (NIC) card of a device, they are frequently seen. Unicast, Multicast, and Broadcast are the three different categories of MAC addresses.

Simply examining the first byte will allow you to determine the sort of address you are viewing. The first byte of a unicast address, for instance, will be even, such as 02, 04, 06, etc. For network protocols like TCP/IP to operate, MAC is a crucial component. Both broadband routers and computer operating systems allow users to view and occasionally modify MAC addresses.

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Answer: Apply battery-terminal grease to the terminals to help prevent corrosion. It's available at any auto parts store and usually comes in a little ketchup-like packet. Another great option is AMSOIL Heavy-Duty Metal Protector. It creates a protective coating on terminals that wards off corrosion.

Explanation:

When incoming traffic is halted and a special left-turn signal, green arrow, or delayed green light allows you to turn left. shows that one side of an intersection has a green light while the oncoming traffic light is still in the red.

A protected left turn is one that is permitted at an intersection with a left-turn signal, a green arrow, or a delayed green light. The right answer is A. when a special left-turn signal, green tick, or delayed green light allows you to make a left turn while oncoming traffic is stopped. shows that a crossroads has a green arrow on one side and a red light on the other.

When a green indicator is pointing downhill steadily, it means that the lane is open for driving. Drivers should get ready to evacuate if they see a continuous YELLOW X signal, which signifies that the lane it is over is about to close to traffic. If there is a steady green arrow, it means you can turn in that direction.

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Answer:

a

Explanation:

To overcome this challenge, companies need to ensure that their systems are compatible with each other.

Extranet is a platform that allows businesses to interact and exchange data with their partners. This allows the sharing of information between the companies and reduces internetworking costs. The extranet helps to increase coordination between business partners in the following ways:Encourages sharing of information: The extranet allows companies to share data with their partners. This allows the partners to stay updated on the latest trends in the market and come up with new business ideas. It also allows companies to improve their supply chain and speed up delivery times. Improves communication: The extranet allows companies to communicate more effectively with their partners. This is done through the use of chat rooms, message boards, and email. This allows partners to exchange ideas and discuss business strategies in real-time.Identify two companies that use extranets as an internetworking platform:Two companies that use extranets as an internetworking platform are:a. Walmart: Walmart uses an extranet to manage its supply chain.

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Ragman assigns the mission "Database - Part 1" in Escape From Tarkov. You are asked to get the cargo manifests for Goshan, OLI, and IDEA from Interchange. Contents. Database for Escape from Tarkov: Part 1 Quest Information.

You can keep information on a certain topic in an organized way using a database. It's fantastic when you need to keep a computer system's worth of searchable data or information. Many systems in use today employ databases.

A database is used to store user information on nearly all popular websites with a large user base and almost every online store that sells things. Most databases comprise one or more tables, each of which may have a number of unique fields.

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The values for the solar flux and heat transfer coefficient of air can vary from place to place and time to time

A late summer day, a concrete sidewalk receives a continuous solar flux of 650 w/m². Assume all of this energy is transferred back into the air (ambient temperature is 25 °C) and that no heat is conducted downward into the sidewalk.

Compute the steady-state surface temperature of the sidewalk assuming that the heat transfer coefficient in the air is given below.

The steady-state surface temperature of the sidewalk is determined by the following formula:

τe = q / σ (T⁴e - Ta⁴)    

Where,

Ta = 25°Cσ = 5.67 x 10⁻⁸ w/m²k⁴q = 650 w/m²

The heat transfer coefficient of air is given as;

h = 10 w/m²kτe = (q / h) + Ta

Putting the values of h, q, and Ta in the above formula,

τe = (650 / 10) + 25τe = 90°CSo,

the steady-state surface temperature of the sidewalk is 90°C.

Note: This type of problem is a simplified model of the real world. Real sidewalks conduct heat into the ground and receive energy from the ground.

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It is to be noted that all UHRS platforms are optimized for the popular kinds of internet browser applications.

The Universal Human Relevance System (UHRS) is a crowdsourcing platform that allows for data labeling for a variety of AI application situations.

Vendor partners link people referred to as "judges" to offer data labeling at scale for us. All UHRS judges are bound by an NDA, ensuring that data is kept protected.

A browser is a software tool that allows you to see and interact with all of the knowledgeon the World Wide Web. Web sites, movies, and photos are all examples of this.

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Answer:

\(w_{out}=319.1\frac{BTU}{lbm}\)

Explanation:

Hello,

In this case, for the inlet stream, from the steam table, the specific enthalpy and entropy are:

\(h_1=1456.0\frac{BTU}{lbm} \ \ \ s_1=1.6413\frac{BTU}{lbm*R}\)

Next, for the liquid-vapor mixture at the outlet stream we need to compute its quality by taking into account that since the turbine is adiabatic, the entropy remains the same:

\(s_2=s_1\)

Thus, the liquid and liquid-vapor entropies are included to compute the quality:

\(x_2=\frac{s_2-s_f}{s_{fg}}=\frac{1.6313-0.39213}{1.28448}=0.965\)

Next, we compute the outlet enthalpy by considering the liquid and liquid-vapor enthalpies:

\(h_2=h_f+x_2h_f_g=236.14+0.965*933.69=1136.9\frac{BTU}{lbm}\)

Then, by using the first law of thermodynamics, the maximum specific work is computed via:

\(h_1=w_{out}+h_2\\\\w_{out}=h_1-h_2=1456.0\frac{BTU}{lbm}-1136.9\frac{BTU}{lbm}\\\\w_{out}=319.1\frac{BTU}{lbm}\)

Best regards.