Propane gas enters a continuous adiabatic heat exchanger

Propane gas enters a continuous adiabatic heat exchanger’ at 40°C and 250 kpa and exits at 240°C super heated steam at 300°C and 5.0 bar enters the exchanger flowing counter currently to the propane and exits as a saturated liquid at the same pressure.

(a) Taking as a basis 100 ml of propane fed to the exchanger, draw and label a process flowchart. Include in your labeling the volume of propane fed (m3), the mass of steam fed (kg), and the volume of steam fed (m3).

(b) Calculate values of the labeled specific enthalpies in the following inlet—outlet enthalpy table for this process.

(c) Use an energy balance to calculate the required mass feed rate of the steam. Then calculate the volumetric feed ratio of the two streams (m3 steam fed/m3 propane fed). Assume ideal gas behavior for the propane but not the steam and recall that the exchanger is adiabatic.

(d) Calculate the heat transferred from the water to the propane (kJ/m3 propane fed). (Hint: Do an energy balance on either the water or the propane rather than on the entire heat exchanger.)

(e) Over a period of time, scale builds up on the heat transfer surface, resulting in a lower rate of heat transfer between the propane and the steam. What changes in the outlet streams would you expect to see as a result of the decreased heat transfer?

Density

Immediately prior to a nuclear fission detonation, a pultonium spherical mass is compressed by high explosives in such a way that it briefly becomes a sphere with half the radius of the original sphere. As a result of the compression. the density of the sphere will:

1)Douples

2)Quadruples

3)Increases by a factor of 8

4)Decreases by a factor of 8

Q2)Length scale in physics suppose we model a hydrogen atom as a sphere with a radius of 0.53 A = 5.3 * 10^-11 m . what’s the volume of such an atom? recall that the volume of a sphere is V sphere = 4/3 pi r^3

1)3.8 * 10^-15 m^3

2)1.2 * 10^-21 m^3

3)6.2 * 10^-31 m^3

4)2.8 *10^-42 m^3

 

Particle’s velocity, acceleration and magnitude

A particle initially at the origin is moving initially at 4.10 m/s at an angle of 33.5 o above the horizontal. Two seconds later, its velocity is 6.05 m/s at an angle of 59.0o below the horizontal. Assume the particle to have constant acceleration.

a. What was the magnitude of the particle’s acceleration during these 2.00 s?

b.What was the direction of the particle’s acceleration during these 2.00 s?

c. What was the magnitude of the particle’s displacement during these 2.00 s?

d. What was the direction of the particle’s displacement during these 2.00 s?

e. What is the magnitude and direction of the particle’s average velocity during these 2.00 s?

Please show steps to how you got your answers.

Wave mechanics

Does the indeterminacy of quantum mechanics  arise from our knowledge of the time-evolution of the wave function between measurements ( as described in Schrodinger’s equation), or does it have another origin?

1.What are the role of eigenvalue equations in determining which energy values are possible in a bound system?

2.Are there any situations where quantum mechanics unambiguously predicts the result of an energy measurement with certainty?

3.How does the collapse of the wave function influence the result of an energy measurement taken immediately after another energy measurement?

4.What are the roles of the overlap and coefficient rules in predicting the probability of obtaining a given value when an energy measurement is made in a given state?

5.What is the role of Borns rule in predicting the probability of finding a particle within a given interval?

6.How does the collapse of the wave function influence the result of a position measurement taken immediately after another position measurement?

7.What types of predictions are possible with quantum mechanics?

Comment on the extent to which these predictions can be compared with experiment, for example, making repeated experiments.

Nuclear Medicine

Nuclear medicine is a specialized branch of modern medicine that exploits the process of radioactivity for imaging, diagnosis, and treatment. Many imaging techniques inject small amounts of radioactive material into the body, which are then tracked by a sensing device specific to the type of radiation emitted from that material. Radiation has also been used to destroy diseased tissue, typically beyond the reach of standard surgical techniques.

Using the readings for this module,  Address the following:

  • Explain the scientific and technical concepts related to nuclear medicine. Consider the following questions when you construct your response:

o    What type of radiation is typically exploited in most nuclear medicine procedures?

o    How are patients prepared for nuclear medicine procedures?

o    What are the advantages and limitations of nuclear medicine?

o    What ailments are typically diagnosed and treated via nuclear medicine procedures? 

  • Evaluate a minimum of three applications of nuclear medicine relating to any of the following topics:

o    Positron Emission Tomography (PET) scans

o    Gallium scans

o    Indium white blood cell scans

o    Iobenguane scans (MIBG)

o    Octreotide scans

o    Hybrid scanning techniques employing X-ray computed tomography (CT) or magnetic resonance imaging (MRI)

o    Nuclear medicine therapy using radio pharmaceuticals

Support your statements with examples. Provide a minimum of three scholarly references.

Write a 2–3-page paper in Word format. Apply APA standards to citation of sources.

 

 

 

 

Fundamental Physics

Think of an interesting real-world problem that you can solve using what you’ve learned in class this year. It can be something related to engineering, circuits, power, optics, electricity, and magnetism. Make it something that would interest you. For example:

  • What surface area of solar panels would you need to generate the amount of energy needed to power a spinning space station ring (at or around Earth’s orbital radius) that could provide a centripetal force that would simulate Earth’s gravity? How would you design the station in order for it to work?
  • Could you harness the power of stationary bikes and treadmills in the gym to power a room or building?
  • Could you design an invisibility cloak or something like it with thin-film interference?
  • Can you build a novel circuit out of the parts we studied in class and use differential equations to predict the behavior of current and voltage with time?
  • Feel free to discuss ideas with me in class or in office hours.

  • The idea should come from you and be novel, interesting, and solvable.
    • You will need to apply the concepts and equations we studied in this course
    • You will need to look up specifications, constants, or other equations you may need, and you may also need to make approximations or assumptions
    • You should be prepared to do a few pages of drawings, diagrams, equations to lay out your work.

Mechanics

1. A drum containing 50litres of paint has a total mass of 70kg. The mass of the empty drum, including the lid, is 5kg.

(i) Calculate the relative density of the paint.

(ii) The drum is made of a metal of relative density 7.8. Calculate the volume of metal, in cm3 , used to make the drum and lid.

2. A belt is driven by a pulley. The tensions in the two parts of the belt are 60N and 80N, as shown in the diagram. Calculate the magnitude and direction of the total force exerted on the pulley by the belt.

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3. A uniform springboard at a swimming pool has a weight of 150N and length 4.0m. It is held by two supports, A at one end and B, 1.5m from A.

(a) Calculate the force exerted by support A.

(b) A diver of mass 50kg walks to the end of the board. Calculate:

(i) the force exerted by support A.

(ii) the force exerted by support B.

4. The system of two weights hanging from a rope is in equilibrium with the rope in the centre exactly horizontal.

(a) By considering the equilibrium of point A, calculate tension T1, tension T2.

(b) By considering the equilibrium of point B, calculate angle θ and T3. 1

5. Calculate the x and y coordinates of the centroid of the area shown. Dimensions are in mm.

6.  A steel wire of cross-sectional area 0.50mm2 and length 4.0m stretches elastically by 3.0mm when the tension in it is increased by 75N.

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(a) Calculate:

(i) the longitudinal stress applied to the wire.

(ii) the longitudinal strain produced.

(iii) the value of the Young modulus for this steel.

(b) The lift cable in a sky-scraper consists of 100 strands of this wire. By how much does a 90m length of this cable stretch when an 80kg passenger steps into the lift? The tension is the same in each cord.

7.  A ball is thrown vertically upwards with an initial velocity of 25m/s from the base of a 15m cliff. Neglect air resistance and the small horizontal motion. Calculate:

(a) the height, h, by which the ball clears the top of the cliff,

(b) the time after release at which the ball lands at B,

(c) the impact velocity at B.

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8. A footballer kicks a ball at 25m/s (with no spin) from the ground at 60° from the horizontal. (ignore air resistance)

(a) Calculate the time that the ball in the air.

(b) Calculate how far away from the footballer the ball hits the ground.

9. A trolley A (3kg) and mass B (2kg) are joined by a light inextensible string which passes over a smooth pulley fixed at the edge of a horizontal table. Initially, A is held at rest on the table while B hangs freely over the side.

(a) Calculate the acceleration which the system will have when mass A is released.

(b) Calculate the tension in the string.

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10. Two smooth spheres A and B, of different mass, are travelling towards each other with speeds of 0.1m/s and 0.4m/s, as shown. After impact, the direction of both spheres is reversed and the speed of A is 0.2m/s. e = 0.6. Calculate

(i) the speed of B after the impact.

(ii) the ratio: (mass of A)/(mass of B).

11. A car of mass 1000kg, travelling at 100km/hr requires 60m to come to a halt in an emergency stop once the brakes are applied. The car decelerates at a constant rate because of the friction of its tyres on the road. Calculate the coefficient of friction.

12. A car, of mass 1000kg, travelling at 12ms−1 up a slope inclined at 15° to the horizontal, stops in a distance of 25m. Calculate the frictional force which must be acting.

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Physics

http://roneducate.weebly.com/uploads/6/2/3/8/6238184/university_physics_young_and_freedman_13th_edition.pdf Would you please write notes from the book above about Chapter 11 @@ important things to know before writing the notes: For each section, you must make a bulleted list of important ideas and concepts in the section. Most sections should have at least 3 major ideas / concepts listed. For all equations on a yellow background in a given section, you must write out the equation. At the end of each set of notes, make a table with each variable used in the equations from the reading, its description it in words and the units associated with it

 

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Heat

What is the definition of “heat”? What are some different units of heat? Are “temperature” and “heat” the same?What are the different types of heat transfer? Give a practical example of each type of heat transfer. List and describe the 6 different phase change processes. Which of the processes are “cooling” processes? Which are “warming” processes? What is “thermal conductivity”? Provide a practical example of its application. What is momentum? Give a practical example.

 

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Physics

What stages of Jean Piaget’s Theory of Cognitive Development do you believe are most affected by social isolation? Explain your reasoning.

 

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Applied Electronics

In a power plant four heat sensitive gauges are used to monitor the temperature of four different parts of the machinery. The gauges are identified as Z,Y,X, and W and given the weighting 8, 4,2, and 1 respectively. When the temperature of an individual gauge reaches a dangerous level it output a logic 1; for all other conditions it outputs a logic 0. The output from the four gauges are combine to form a four bit binary word. When the combine weighting from the gauges reaches 9 the plant operator switches the machinery off ensuring that the combine weighting of the gauges never exceeds 9. Assume the change in temperature of the machinery follows the binary counting sequence. The binary word from the gauges forms the input to a combinational logic circuit, the output from which is connected to a seven segment LED display. Your job as a design engineer is to:-

1) Working in groups of three design the combinational circuit that is connected to the seven segment LED using logic gates or any other forms of small scale integration logic device and appropriate drivers for the LED. For this coursework you must not use a single off the shelf device. Students who take this approach will fail the exercise.
2) prototype and test the circuit using breadboard
3) design the PCB for the circuit using four switches to represent the gauges
4) populate and test the PCB.
It is important that the characteristic of the devices are fully understood before using them in your design.
If the engineering labour rate is £45/hour and the manufacturing labour rate is £35/hour estimate how much it would cost to manufacture 1000 of the devices. What would the individual price per device be?
Write a report which outline the work undertaken, the difficulties encountered and the solutions applied to solve them. The report must not be more than 3 single side A4 pages. What is the more popular name for the circuit you have design?

 

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Physics

http://roneducate.weebly.com/uploads/6/2/3/8/6238184/university_physics_young_and_freedman_13th_edition.pdf Would you please write notes from the book above about Chapter 11 @@ important things to know before writing the notes: For each section, you must make a bulleted list of important ideas and concepts in the section. Most sections should have at least 3 major ideas / concepts listed. For all equations on a yellow background in a given section, you must write out the equation. At the end of each set of notes, make a table with each variable used in the equations from the reading, its description it in words and the units associated with it.

 

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Physics

I need 2 pages for chapter 10(sec 4-5) and chapter 11(whole).Also, if you have some draw picture to help your summary is good for me but I NEED some easy draw picture.( if you can). t the same the ideas for chapter 1 section (6-9) chapter 2and chapter 3 , 4 and 5 or 6. please read on this below YOU MUST READ TO LEARN. Each week, you will be assigned the equivalent of 1.5 chapters in the book to read. For each section, you must make a bulleted list of important ideas and concepts in the section. Most sections should have at least 3 major ideas / concepts listed. For all equations on a yellow background in a given section, you must write out the equation. At the end of each set of notes, make a table with each variable used in the equations from the reading, its description it in words and the units associated with it. You must list all variables used in each reading; I don’t care if this is the 5th set of notes to use force. • Notes Dates: Unless otherwise specified, notes must be turned in at the start of class. No late notes will be accepted. • Notes Grading: Notes are out of 10 points each. Notes will be graded on a + (10 pts),  (8 pts), - (5 pts), 0 system. Generally,+ is given for notes that provide a good, concise summary with few grammatical errors,  for notes that meet the minimum requirements, and - for notes that do not meet minimum requirements. • Plagiarism: Any form of plagiarism (word for word copying of another student’s notes) will result in a zero grade for that assignment. The second instance of plagiarism will result in a zero for the reading notes portion of your grade. I strongly encourage you to work on your notes independently. You may copy directly from the text book, but I encourage you to try to reword – you’ll learn the material better. • Drop one: You may drop one notes grade during the semester. The name book is (Young, H. and Freedman, R., University Physics with Modern Physics, 13th Ed., Pearson (Addison Wesley) (Chapters 1-16) ISBN-10:0-321-69686-7 (Earlier editions can work.)). PLEASE I need to write simple words and some draw pictures if you can. The book is http://roneducate.weebly.com/uploads/6/2/3/8/6238184/university_physics_young_and_freedman_13th_edition.pdf

 

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Users interaction of space

This assignment requires that you get EXPLICITE with use and reference to the “Moves that Matter in Academic Writing” as recommended by Graff and Birkenstein and the Patrick Rael “Reading, Writing and Researching” text from last week. Write a minimum of 4 essays where you use the EXACT language from templates in each of the book sections:
o Part 1: “They Say”
o Part 2: “I Say”
o Part 3: Tying It All Together
o Part 4: In Specific Academic Settings
When writing, UNDERLINE the EXACT language you took from the “They Say” templates to show where and how the language is relevant to how you use what others are saying, respond or plant a naysayer in your text, connect the parts and enter the discussion.

 

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Physics

http://roneducate.weebly.com/uploads/6/2/3/8/6238184/university_physics_young_and_freedman_13th_edition.pdf Would you please write notes from the book above about Chapter 11 @@ important things to know before writing the notes: For each section, you must make a bulleted list of important ideas and concepts in the section. Most sections should have at least 3 major ideas / concepts listed. For all equations on a yellow background in a given section, you must write out the equation. At the end of each set of notes, make a table with each variable used in the equations from the reading, its description it in words and the units associated with it.

 

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Physics

Objectives (5 points) – in one or two sentences describe the purpose of the lab. What physical quantities are you measuring? What physical principles/laws are you investigating? b) Procedure (5 points) – this section should contain a brief description of the main steps and the significant details of the experiment. c) Experimental data just say that the data is attached to the paper. no need to rewrite the data d) Results (20 points) – you are required to show sample calculation of the quantities you are looking for including formulas and all derived equation used in your calculations. Provide all intermediate quantities. Show the calculation of the uncertainties using the rules of the error propagation. You may choose to type these calculations, but neatly hand write will be acceptable as well. Please label this page Sample Calculations and box your results. e) Analysis and discussion (25 points) – here you analyze the data, briefly summarize the basic idea of the experiment, and describe the measurements you made. State the key results with uncertainties and units. Interpret your graphs and discuss what trends were observed, what was the relationship of the variables in your experiment. An important part of any experimental result is a quantification of error in the result. Describe the qualitative effect of each source of errors on your results. Describe what you learned from your results. The answers to any questions posed to you in the lab packet should be answered here. f) Conclusion (5 points) – Did you meet the stated objective of the lab? You will need to supply reasoning in your answers to these questions.

 

 

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Laws of thermodynamics

In 1-2 pages, using APA-style formatting, provide an explanation of the meaning of the first and second laws of thermodynamics. Then, using the second law, explain why a barrel of oil can be used only once as a fuel source, or in other words, why can we not recycle high-quality energy resources.

 

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Lasers

One page (A4 pdf) poster on laser. it should include the history of lasers and all the equations and what not, the uses of lasers with explanations and the future applications of lasers.

 

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Physics

Imagine that an observation is being made of an expected occultation of a distant star by a planet. Before the time when the star is expected to be temporarily blocked by the planet, the star’s light dims and then brightens again twice before disappearing behind the planet. After the star reappears on the other side of the planet, the same dimming and brightening occurs again. Explain what can be inferred from this and why. Also, describe an instance of a similar occurrence

What is the Drake equation and what does it estimate? Be sure to include an explanation of each factor.How does the atmosphere of Venus compare to Earth’s atmosphere? Be sure to include comparisons of temperature, pressure, and composition. What are the implications for the study of Venus (both from orbit and the surface) and how has this been overcome?What do we see when we see aurora from Earth? What is happening and why?

 

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Kepler’s Law in response

Discuss three scientific concepts connected to the asteroid’s motion. (Please do not include Kepler’s Law in response.) If the asteriod is moving at a constant speed in its orbit, does this also mean it is moving at a constant velocity? Explain your answer. Is the asteriod accelerating? What force acts to hold the asteriod in orbit around the Sun? What direction does this force act?This asteriod’s motion is affected by many different massive objects: the Sun, Mars, Jupiter, and other asteriods. Which of these objects has the most influence in the asteriod’s orbit? Explain your answer.Assume this asteriod has the shape of a sphere. A rock sitting on the surface of the asteriod has a weight of 100 Newtons. What would the weight of this rock be if it were moved to a distance above the surface equal to the radius of the asteriod? How is the mass of the rock affected by its change in position?At some point in its orbit, our asteriod is moving with a speed of 20 kilometers per second. Determine the kinetic energy of the asteroid assuming it has a mass of 1000 kilograms. Be sure your answer is in the correct units of energy (1 kilometer = 1000 meters; 1 Joule = kg-m²/sec².If the distance from the Sun varied during our asteriod’s orbit, would its kinetic energy change? Explain your answer. Would its potential energy change? Explain your answer. Would the total energy (the sum of kinetic and potential energies) of the asteriod change? Explain your answer.

 

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Force of a Baseball Swing. A baseball has mass 0.135 kg.

If the velocity of a pitched ball has a magnitude of 42.5m/s and the batted ball’s velocity is 54.0m/s in the opposite direction, find the magnitude of the change in momentum of the ball and of the impulse applied to it by the bat.If the ball remains in contact with the bat for 2.1 ms , find the magnitude of the average force applied by the bat.

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Mastering physics

Lasers are classified according to the eye-damage danger they pose. Class 2 lasers, including many laser pointers, produce visible light with no greater than total power. They’re relatively safe because the eye’s blink reflex limits exposure time to 250.Find the total energy delivered before the blink reflex shuts the eye.Express your answer with the appropriate units.

 

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LED lighting producer

Write a paper describing red LED( light emitting diode) lights that can be used in engineering fields.Follow what on top. It must be contain of:Introduction (technical definition, overall physical description and the components),Functional overview,
(a picture of an LED with measurements and arrows directed to the parts) use source and cite it.Discussion of the components ( talk about each part in it with its technical definition, its function and the physical description of it (the description should be mechanism)-finally conclusion ( restate the technical definition and the components with brief definition and conclude sentence that is not your opinion.

 

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LED lighting producer

Write a paper describing red LED( light emitting diode) lights that can be used in engineering fields.Follow what on top. It must be contain of Introduction (technical definition, overall physical description and the components),
-Functional overview,
-(a picture of an LED with measurements and arrows directed to the parts) use source and cite it
-Discussion of the components ( talk about each part in it with its technical definition, its function and the physical description of it (the description should be mechanism)
-finally conclusion ( restate the technical definition and the components with brief definition and conclude sentence that is not your opinion.

 

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