A system executes a power cycle while receiving 1050 kJ by heat transfer at a temperature of 525 K and discharging 700 kJ by heat transfer at 350 K. There are no other heat transfers. a. Using Eq. 5.13, determine whether the cycle is internally reversible, irreversible, or impossible. b. Determine the thermal efficiency using Eq. 5.4 and the given heat transfer data. Compare this value with the Carnot efficiency calculated using Eq. 5.9 and comment.

Answer:

See attached images for the diagrams and tables

Answer:

The energy, that is dissipated in the resistor during this time interval is 153.6 mJ

Explanation:

Given;

number of turns, N = 179

radius of the circular coil, r = 3.95 cm = 0.0395 m

resistance, R = 10.1 Ω

time, t = 0.163 s

magnetic field strength, B = 0.573 T

Induced emf is given as;

[tex]emf= N\frac{d \phi}{dt}[/tex]

where;

ΔФ is change in magnetic flux

ΔФ  = BA = B x πr²

ΔФ  = 0.573 x π(0.0395)² = 0.002809 T.m²

[tex]emf = N\frac{d \phi}{dt} = 179(\frac{0.002809}{0.163} ) = 3.0848 \ V[/tex]

According to ohm's law;

V = IR

I = V / R

I = 3.0848 / 10.1

I = 0.3054 A

Energy = I²Rt

Energy = (0.3054)² x 10.1 x 0.163

Energy = 0.1536 J

Energy = 153.6 mJ

Therefore, the energy, that is dissipated in the resistor during this time interval is 153.6 mJ

Answer:

164.4 W

Explanation:

We can define Heat loss as a measure of the total transfer of heat through the fabric of a building from inside to the outside, either from conduction, convection, radiation, or any combination of the these.

Please kindly check attachment for the solution of the heat loss as asked in the question.

The attached file have the solved problem.

Answer:

24.78 mg/L

Explanation:

The step-to-step explanation is written legibly with clear explanation in the diagram attached below.

Answer:

Answer: Input rate = 2.288 x 10⁶mg/s

             Output rate =78 x 10³Cmg/s

            Decay rate = 28.94 x 10 ⁵C mg/s

Explanation:

Assuming that complete and instantaneous mixing occurs in the lake, this implies that the concentration in the lake C is the same as the concentration of the mix leaving the lake Cm

   Input rate = Output rate  + KCV

Input rate = Q₁C₁ + QwCw

                = (75.0m³/s x 25.5mg/L + 3.0m³/s x 125.0mg/L) x 10³L/m³

                = 2.288 x 10⁶mg/s

Output rate = QmCm = (Q₁ +Qw)C

                   =(75 + 3.0)m³/s x Cmg/L x 10³L/m³ = 78 x 10³Cmg/s

Decay rate = KCV = 5/d x Cmg/L x 50 x 10⁶ x 10³L/m³  

                                           24 hr/d x 3600s/hr

                     = 28.94 x 10 ⁵C mg/s

So,

                      =2.288 x 10⁶ = 78 x 10³C + 28.94 x 10 ⁵C  = 29.72 X 10⁵C

                      = 2.288 x 10⁶          

                        29.72 X 10⁵         = 0.77 mg/l

                   C =

Answer:

(a) 561.12 W/ m² (b) 196.39 MW

Explanation:

Solution

(a) Determine the energy and power of the wave per unit area

The energy per unit are of the wave is defined as:

E = 1 /16ρgH²

= 1/16 * 1025 kg/ m3* 9.81 m/s² * (2.5 m )²

=3927. 83 J/m²

Thus,

The power of the wave per unit area is,

P = E/ t

= 3927. 83 J/m² / 7 s = 561.12 W/ m²

(b) The average and work power output of a wave power plant

W = E * л * A

= 3927. 83 J/m² * 0.35 * 1 *10^6 m²

= 1374.74 MJ

Then,

The power produced by the wave for one km²

P = P * л * A

= 5612.12 W/m² * 0.35 * 1* 10^6 m²

=196.39 MW

Answer:

(a) 0.0968 (b) the probability that a randomly selected LU graduate will have a salary of  exactly $30,400 is 0.0000 (c) 29.12% (d) 3000 students graduates this year from this university

Explanation:

Solution

For the problem given,

The average salary starting for this year's graduates at a large university (LU) is = 20,000

So,

The mean μ = $ 20,000

Standard deviation is б = $ 8000

Note: kindly find the complete steps taken to get the solution to this questions attached below.

Answer:

Zx = 176In³

Explanation:

See attached image file

Answer:

volume flow rate Q  = 53.23 in³/s

Explanation:

given data

diameter = 4.22 inches

length = 75 inches

screw rotates = 65 revolutions per minute

depth = 0.23 in

flight angle = 21.4 degrees

head pressure = 705 lb/in²

viscosity = 145 x [tex]10^{-4}[/tex] lb·sec/in²

solution

we get here volume flow rate of platstic in barrel that is express as

volume flow rate Q = volume flow rate of die - volume flow of extruder barrel   ................1

here

volume flow rate extruder barrel is

flow rate   = [tex]\frac{\pi \times 705 \times 4.22 \times 0.23\times sin21.4 }{12\times 145 \times 10^{-4}\times 75 }[/tex]    

flow rate = 60.10  

and

volume flow rate of die is express as

volume flow rate = 0.5 × π² × D² × Ndc ×  sinA × cosA   .............2

put here value and w eget

volume flow rate = 0.5 × π² × 4.22² × 0.23 × 1 × sin21.4 × cos21.4

volume flow rate = 6.866

so put value in equation 1 we get

volume flow rate Q  = 60.10 - 6.866  

volume flow rate Q  = 53.23

Answer:

2.83 years

Explanation:

Please kindly see the attached file at thw attachment area for a detailed and step by step solution to the given problem.

Answer:

See attachment

Explanation:

Gain= Vo/Vin

If we set Vout=9.62V corresponding to Vin=2.6V, then gain will be 3.7

Using above value of gain, let's design non-inverting op-amp configuration

Gain= 1+Rf/Rin

3.7= 1= Rf/Rin

2.7= Rf/Rin

If Rin=100Ω then Rf= 270Ω

Answer:

See attached images

Answer:

4.8 years

Explanation:

The rate of corrosion (CPR) is defined as the rate at which a metal corrodes in a specific environment. It depends on the environmental condition and the type of metal. It is expressed in inches per year or melts per year. CPR is given by:

[tex]CPR=\frac{KW}{\rho At}[/tex]

Where K is a constant = 534, W is the weight corroded = 2.1 kg = 2.1 × 10⁶mg, A is the area = 17 in², ρ is the density = 7.9 g/cm³

From the CPR equation:

[tex]t=\frac{KW}{\rho A(CPR)}=\frac{534*2.1*10^6}{7.9*17*200}= 4.17*10^4 hrs=4.8years[/tex]

Answer:

Find the attachments sequence wise for complete solution.

Given Information:  

distance = s₁ = 6050 ft

velocity = v₁ = 0 mi/hr

velocity = v₂ = 150 mi/hr

velocity = v₃ = 195  mi/hr

Acceleration = a = 2 ft/s²

Required Information:  

distance = s₂ = ?

Answer:

distance = s₂ = 14,399 ft

Explanation:

We know from the equations of motion,

v₃² = v₂² + 2a(s₂ - s₁)

We want to find out the distance s₂

2a(s₂ - s₁) = v₃² - v₂²

s₂ - s₁ = (v₃² - v₂²)/2a

s₂ = (v₃² - v₂²)/2a + s₁

First convert given velocities from mi/hr to ft/s

1 mile has 5280 feet and 1 hour has 3600 seconds

velocity = v₂ = 150*(5280/3600) = 220 ft/s

velocity = v₃ = 195*(5280/3600) = 286 ft/s

s₂ = (v₃² - v₂²)/2a + s₁

s₂ = (286² - 220²)/2*2 + 6050

s₂ = 33396/4 + 6050

s₂ = 8349 + 6050

s₂ = 14,399 ft

Therefore, the plane would have traveled a distance of 14,399 ft when it reaches a constant speed of 286 ft/s

Answer:

Find the complete solution in the given attachments

Answer:

Step 1

Given

Diameter of circular grill,   D = 0.3m

Distance between the coal bricks and the steaks,  L = 0.2m

Temperatures of the hot coal bricks,  T₁ = 950k

Temperatures of the steaks, T₂ = 5°c

Explanation:

See attached images for steps 2, 3, 4 and 5

Answer: The feed rate is

17,020kg/he and the rate is 13,520kg/h

Check the attachment for step by step explanation

Answer:

D

Explanation:

the way vertices are connected may be different so having same number of edges do not mean that total degree will also be same.

Answer:

Check the explanation

Explanation:

For ideal regeneration heat loss in cooling aqual to heat gain in compression so temperature Tb=Td as  can be seen in the step by step solution in the attached images below.

Find solution in attachments below

Answer:

Given:

P₁ = 500 kPa

T₁ = 860 K

P₂= 100 kPa

T₂ = 460 K

Let's take entropy properties of T1 and T2 from ideal properties of air,

at T = 860K, s(T₁) = 2.79783 kJ/kg.K

at T = 460K, s(T₂) = 2.13407 kJ/kg.K

using entropy balance equation:

[tex] \frac{\sigma _cv}{m} = s(T_2)- s(T_1) - R In [\frac{P_2}{P_1}] [/tex]

[tex] \frac{\sigma _cv}{m} = 2.79783 - 2.13407 - 0.287 In [\frac{100}{500}] [/tex]

= - 0.2018 kJ/kg. K

In this case the entropy is negative, which means the value of exit temperature is not correct, beacause entropy should always be positive(>0).

Answer:

[tex] z = \frac{3-4.18}{1.19}=-0.992[/tex]

[tex] z = \frac{5-4.18}{1.19}=0.689[/tex]

And we can find this probability with this difference:

[tex] P(-0.992<z<0.689) = P(z<0.689) -P(z<-0.992) =0.752 -0.161=0.591[/tex]

And then we can conclude that the probability that someone watches between 3 and 5 hours a day is approximately 0.591 using a normal distribution

Explanation:

For this case we can define the random variable X as "hours that a person watches television". For this case we don't have the distribution for X but we have the following parameters:

[tex]\mu = 4.18,\sigma =1.19[/tex]

We can assume that the distribution for X is normal

[tex] X \sim N(\mu = 4.18 , \sigma =1.19)[/tex]

And we want to find this probability:

[tex] P(3 <X<5)[/tex]

And we can use the z score formula given by:

[tex] z=\frac[X- \mu}{\sigma}[/tex]

And we can find the z score for each limit and we got:

[tex] z = \frac{3-4.18}{1.19}=-0.992[/tex]

[tex] z = \frac{5-4.18}{1.19}=0.689[/tex]

And we can find this probability with this difference:

[tex] P(-0.992<z<0.689) = P(z<0.689) -P(z<-0.992) =0.752 -0.161=0.591[/tex]

And then we can conclude that the probability that someone watches between 3 and 5 hours a day is approximately 0.591 using a normal distribution

Answer:

Check the explanation

Explanation:

Kindly check the attached image below to get the step by step explanation to the above question.

Answer:

See explaination

Explanation:

package sample;

import javafx.application.Application;

import javafx.fxml.FXMLLoader;

import javafx.geometry.*;

import javafx.scene.Parent;

import javafx.scene.Scene;

import javafx.scene.control.Label;

import javafx.geometry.Insets;

import javafx.geometry.Pos;

import javafx.scene.Scene;

import javafx.scene.control.Button;

import javafx.scene.control.Label;

import javafx.scene.control.TextField;

import javafx.scene.layout.GridPane;

import javafx.stage.Stage;

public class Main extends Application {

atOverride // Replace the at with at symbol

public void start(Stage primaryStage) throws Exception{

primaryStage.setTitle("Calculator");

GridPane rootNode = new GridPane();

rootNode.setPadding(new Insets(15));

rootNode.setHgap(5);

rootNode.setVgap(5);

rootNode.setAlignment(Pos.CENTER);

Scene myScene = new Scene(rootNode, 300, 200);

rootNode.add(new Label("Amount:"), 0, 0);

TextField firstValue = new TextField();

rootNode.add(firstValue, 1, 0);

rootNode.add(new Label("Toatal is:"), 0, 5);

Button aButton = new Button("Calculate");

rootNode.add(aButton, 1, 2);

GridPane.setHalignment(aButton, HPos.LEFT);

TextField result = new TextField();

result.setEditable(false);

rootNode.add(result, 1, 5);

TextField tax = new TextField();

rootNode.add(new Label("Tax:"), 0, 3);

tax.setEditable(false);

rootNode.add(tax,1,3);

TextField tip = new TextField();

rootNode.add(new Label("Tip:"), 0, 4);

tip.setEditable(false);

rootNode.add(tip,1,4);

aButton.setOnAction(e -> {

Float value1 = Float.valueOf(firstValue.getText());

Float value2 =(value1*18)/100;

Float value3 = (value1*7)/100;

Float r = value1+value2+value3 ;

tax.setText(value3.toString());

tip.setText(value2.toString());

result.setText(r.toString());

});

primaryStage.setScene(myScene);

primaryStage.show();

}

public static void main(String[] args) {

launch(args);

}

}

The question is about creating a JavaFX application that calculates and displays the cost of a restaurant meal, including an 18% tip and 7% sales tax. To create the application, an interface is needed with a text field for user input, a button for the calculation, and labels to display the results. The calculation logic is added to the button event handler.

The subject of this question is in the area of Computers and Technology, specifically application development using JavaFX. To create the desired application, we need to first create an interface, typically using FXML, with a text field for user input (food charge), a button for the calculation, and three labels to display the tip, sales tax, and total respectively.

On the button event handler, we would include the logic to calculate the 18% tip, 7% sales tax, and add all three (food charge, tip, sales tax) to get the total amount. This is done using the following formulas: tip = food charge * 0.18, sales tax = food charge * 0.07, and total = food charge + tip + sales tax. Finally, we would display the calculated amounts on the respective labels.

The code is written in JavaFX, a software platform used to create and deliver desktop applications, along with rich internet applications that can run across a wide variety of devices.

https://brainly.com/question/31593283

#SPJ3

The number of poles required for a 3-phase stepping motor to achieve 0.05 mm spatial control depends on the increments per revolution, which was not provided. To move the axis at 90 mm/sec, the pulses per second from the controller will be calculated based on the screw pitch and the number of increments per revolution. Additional information on the stepper motor is needed for precise calculations.

To answer the student's questions regarding a 3-phase stepping motor for spatial control in a robotics application:

Without the specific number of increments per revolution of the stepping motor, it's impossible to provide an exact answer. However, typically stepper motors with more poles can provide finer control, and thus would be preferred in this application to meet the 0.05 mm spatial control requirement.

The question involves applying principles of static equilibrium and mechanical advantage in physics to calculate forces exerted by a hydraulic cylinder and at a support point in a construction telescoping arm scenario.

The question relates to the application of static equilibrium and mechanical advantage concepts in physics to solve for forces in a telescoping arm used in construction. Specifically, it involves calculating force exerted by a hydraulic cylinder and the force at a support point when a mass is placed at a specific location on the arm.

In order to solve for the force exerted at point B by the hydraulic cylinder (part a) and the force exerted on the supporting carriage at A (part b) when the arm makes an angle  heta = 25 degrees with the horizontal, one would typically use the principles of torques and static equilibrium. Summation of torques around a point, often the pivot, and summation of forces in horizontal and vertical directions are standard procedures. This requires knowledge of the geometry of the construction, the location of the center of gravity, and the mass of the workers and platform.

The information given about the forces in a wheelbarrow and cranes are analogous examples that illustrate similar principles of physics applied to different scenarios. These examples demonstrate how to calculate the mechanical advantage and forces based on lever arms and mass distribution.

The force exerted at B by the hydraulic cylinder BD and the force exerted on the supporting carriage at A can be calculated using principles of moments and equilibrium of forces, respectively.

For part (a): The force exerted at B by the hydraulic cylinder BD can be calculated using the principle of moments. By summing the moments about point A, you can find the force at B.

For part (b): The force exerted on the supporting carriage at A can be determined by considering.

Answer:

Check the attached images below.

Explanation:

It Is required to develop an approximate relation between . Reynolds and Grashor numbers such that the heat-transfer coefficients for pure forced convection and pure .e convection are equal, assuming laminar flow, by comparing the heat-transfer coefficients for forced or free convection over vertical hat plates.  

write the equation or heat transfer coefficient Mr (arced comedian.

Kindly check the attached images below.

Answer:

See explaination

Explanation:

Please kindly check attachment for the step by step solution of the given problem

Answer:

a) [tex]w_{out} = 281.55\,\frac{kJ}{kg}[/tex], b) [tex]s_{gen} = 0.477\,\frac{kJ}{kg\cdot K}[/tex]

Explanation:

a) The process within the turbine is modelled after the First Law of Thermodynamics:

[tex]-q_{out} - w_{out} + h_{in}-h_{out} = 0[/tex]

[tex]w_{out} = h_{in} - h_{out}-q_{out}[/tex]

[tex]w_{out} = c_{p}\cdot (T_{in}-T_{out})-q_{out}[/tex]

[tex]w_{out} = \left(1.005\,\frac{kJ}{kg\cdot K}\right)\cdot (980\,K-670\,K)-30\,\frac{kJ}{kg}[/tex]

[tex]w_{out} = 281.55\,\frac{kJ}{kg}[/tex]

b) The entropy production is determined after the Second Law of Thermodynamics:

[tex]-\frac{q_{out}}{T_{surr}} + s_{in}-s_{out} + s_{gen} = 0[/tex]

[tex]s_{gen} = \frac{q_{out}}{T_{surr}}+s_{out}-s_{in}[/tex]

[tex]s_{gen} = \frac{q_{out}}{T_{surr}}+c_{p}\cdot \ln\left(\frac{T_{out}}{T_{in}} \right)[/tex]

[tex]s_{gen} = \frac{30\,\frac{kJ}{kg} }{315\,K} + \left(1.005\,\frac{kJ}{kg\cdot K} \right)\cdot \ln\left(\frac{980\,K}{670\,K} \right)[/tex]

[tex]s_{gen} = 0.477\,\frac{kJ}{kg\cdot K}[/tex]

Answer:

HW=1.71m

Explanation:

Please kindly check attachment for the step by step solution of the given problem.