## physics report paper I need someone good on it

Rubric for Report # 2Phys 2215  (Hooke’s Law)
Title Experiment and DateIntroduction/Theory (3 points) What are the main purposes of this experiment?
 Brief summary of the theory of Hooke’s Law and how to determine the
Hooke’s Law limit.
Procedure  General description of the experimental method used (noting differences inprocedures and goals for each of the 5 questions (i.e. measurements of k and
destructive testing) A simplified sketch of the experimental set up.
Results Summarize your results for the 5 experiments (include tables and graphs)
 Qu1: Test spring specifications and mass for spring damage. Qu2: Average k and its uncertainty for 1st spring (from table and graph)  and
% comparison Qu3: Estimation of Hooke’s Law limit for 1st spring Qu4: Average k and its uncertainty for 2nd spring and its Hooke’s law limit  Qu5: Average k and its uncertainty for 3rd spring and its Hooke’s law limit
Discussion  Comparison of the measured average values of k and their uncertainties  (for
questions 2, 4 and 5) with your expectations.
 Discussion on how well you were able to estimate the Hooke’s law limit for
your springs (questions 1 and 3) – referring to graphs/tables of results.General  Well written and clear graphs and figures   Reveals a good understanding of the experiments

## Unit3 Test

5.  An electric motor accomplishes what task?

 [removed] converts chemical energy into mechanical energy [removed] converts electrical energy into electromagnetic energy [removed] converts electrical energy into mechanical energy [removed] converts mechanical energy into chemical energy [removed] converts mechanical energy into electrical energy

The next five questions refer to these electric meters:

15.  How much electricity was used during the month of June?

 [removed] 2813 kwh [removed] 2582 kwh [removed] 3011 kwh [removed] 2903 kwh [removed] 2744 kwh

17.

How much would this energy cost the consumer? (assume the average rate of \$0.07 per kwh)

 [removed] \$203.00 [removed] \$210.77 [removed] \$196.91 [removed] \$188.90 [removed] \$176.43

18.  What was the meter reading on June 1?

 [removed] 59,301 [removed] 58,300 [removed] 58,410 [removed] 69,411 [removed] 58,310

19.  What was the meter reading on July 1?

 [removed] 61,134 [removed] 61,132 [removed] 61,234 [removed] 61,123 [removed] 61,223

20.  A piece of iron can be made into a permanent magnet by stroking it with a strong magnet.

 [removed] true [removed] false
10.  If the frequency of a wave is 5 Hz, how many waves will pass by a stationary object in 1 minute?

 [removed] 1/5 [removed] 5 [removed] 300 [removed] 60 [removed] 1/300

11.  A submarine captain wishes to know how far away an undersea cliff face is, so he sends out a SONAR signal. After 0.80 seconds, he receives the echo. How far away is the cliff face?

 [removed] 1500 m [removed] 1200 m [removed] 600 m [removed] 3000 m [removed] 2400 m

 Use this figure to answer the next 3 questions:
12.  On the diagram, which letter represents the amplitude?

 [removed] A [removed] B [removed] C [removed] D [removed] E

13.  Which of the letters represents the wavelength?

 [removed] A [removed] B [removed] C [removed] D [removed] E

14.  Which position represents the trough?

 [removed] A [removed] B [removed] C [removed] D [removed] E

1.  If a star is moving away from Earth at a high speed, which of the following would astronomers observe?

 [removed] The star’s spectrum would not be shifted at all. [removed] The star’s spectrum would be shifted towards red. [removed] The star’s spectrum would be shifted towards blue. [removed] There is not enough information given to determine.
5.  The visible spectrum is made of what types of light?

 [removed] red, orange, yellow, green, blue, violet [removed] infrared, red, orange, green, blue, ultraviolet [removed] red, orange, yellow, green, blue, ultraviolet [removed] radio, infrared, colored light, ultraviolet, x-rays, gamma rays
10.  Which of the following has the most energy?

 [removed] x-rays [removed] ultraviolet [removed] visible light [removed] gamma rays [removed] infrared

11.  Which of the following best describes the dual nature of light?

 [removed] Light can be thought of as visible colors or as invisible colors. [removed] Light can be thought of as being white light or a combination of colored light. [removed] Light can be thought of as a mixture of colored light or a mixture of pigments. [removed] Light can be thought of as behaving like a particle or like a wave.

 [removed] It helps them predict solar and lunar eclipses. [removed] It helps them determine what elements make up stars. [removed] It helps them determine the age of the universe. [removed] It helps them know what the planets are made of.
15.  Which of the following has the longest wavelength?

 [removed] infrared [removed] visible light [removed] gamma rays [removed] x-rays [removed] ultraviolet

16.  Which of the following scientists did not attempt to calculate the speed of light?

 [removed] Michelson [removed] Huygens [removed] Galileo [removed] Einstein

17.  Which of the following characteristics of an object would allow no light to pass through?

 [removed] horizontal polarization [removed] opaqueness [removed] transparency [removed] translucency [removed] transmutaticity
19.  The “speed of light” (c) refers to the speed of all electromagnetic waves under what conditions?

 [removed] through the interstellar ether [removed] through a clear liquid, like water [removed] through a perfect vacuum [removed] through the earth’s atmosphere [removed] The speed of light is the same under any conditions.

## Philosophy

There are certain big questions that philosophers have been puzzling over for millennia. Amazingly, many people ask these same questions in daily life. Reflect on the questions related to each of the six branches of philosophy below. Then, write 2–3 paragraphs describing a time in your life when you have asked similar questions. Talk about the specific circumstances that brought you to each question, and what conclusions you came to. The questions are as follows:

Metaphysics:

• What is real?
• Is the physical world more or less real than the spiritual or psychological world?
• Is there such a thing as a soul? And if so, how does it survive outside of a physical body?
• Do all people have free will, or are lives determined by fate?

Epistemology:

• How is anything known?
• What is the basis for knowledge? Is it innate reason, experience, or something else?
• Is all knowledge subjective, or are there some universal truths?
• What is the relationship between faith and reason?
• What can artificial intelligence teach people about knowledge?
• What are the limits of human understanding?

Ethics:

• What is the right thing to do?
• What does it mean to be a good person?
• Does virtue lead to happiness?
• Do the ends justify the means, or is a virtuous action virtuous in and of itself?
• How does living in a society affect morality?
• Is morality culturally based, individually based, or is there a universal morality?

Aesthetics:

• What is beautiful?
• Is beauty truly in the eye of the beholder, or are there some things that all cultures find beautiful?
• What is the purpose of art?
• How can a piece of art be successful or valuable? Does beauty matter?

Political philosophy:

• What is the best kind of government?
• How much power should the government have?
• What kind of people should be in power?
• How involved should the common citizen be in government?

Social philosophy:

• How should humans behave in a society?
• Do people give up certain rights when they choose to live in a society?
• How do social values affect individual beliefs? Do people behave differently in a crowd than they would individually?
• How does society affect language and other types of communication?

In APA format and reference page included.

## EXPERT_RESEARCHER 2nd Class

Assignment 1: Discussion Questions

Directions:

Just One Questions

Discussion Question Response: By Saturday, September 24, 2016, post your response to the assigned discussion questions in the appropriate threads in theDiscussion Area.

Participation Responses: No later than Wednesday, September 28, 2016, review and comment on the discussion question responses posted by at least two of your peers.

Guidelines: Support your responses with scholarly academic references using APA style format. Assigned course readings and online library resources are preferred. Weekly lecture notes are designed as overviews to the topic for the respective week and should not serve as a citation or reference.

In your discussion question response, provide a substantive response that illustrates a well-reasoned and thoughtful response; is factually correct with relevant scholarly citations,references, and examples that demonstrates a clear connection to the readings.

In your participation responses to your peers, comments must demonstrate thorough analysis of postings and extends meaningful discussion by building on previous postings.

Note: Review South University’s Substantive Participation Policy CriteriaHelpful Tips, and Late Policy available by clicking on the South University Policy and Guidelines navigation tab. The late policy applies to late discussion question responses.

 Grading Criteria Maximum Points Discussion Question Responses: Displays an understanding of the course materials and the underlying concept discussed. Includes course materials and additional scholarly resources to support important points. 15 Participation Responses: Displays an understanding of topic under discussion by affirming statements, asking a related question, or making an oppositional statement. Position must be supported with related evidence.  Responds to a minimum of two peers per question. 10 Professional Practice Connection: Demonstrates reflective thought pertaining to personal perspectives and professional development. Reflective statements include a theoretical rationale. 10 Quality of Academic Writing: Written responses are free of grammatical, spelling or punctuation errors. Citations and references are included and written in the correct APA Style. 10 Total: 45

 Select a discussion question  from the drop down menu below and click Go to begin. Use the  Respond link to post responses and materials that pertain to that question. To respond to an existing posting use the Respond link beneath it.
Topics
Topic
Discussion Question 1
Discussion Question 2
Discussion Question 3
 Discussion Question 1

Choose a middle-range theory or grand theory that, in your opinion, can be applied to research. What are the assumptions underpinning this theory? Discuss how this theory finds application in research.

 Discussion Question 2

Choose a middle-range theory or grand theory that, in your opinion, can be applied to practice. What are the assumptions underpinning this theory? Discuss how this theory finds application in your area of practice.

 Discussion Question 3

Identify a situation or circumstance in your practice setting where a concept from a healthcare theory is manifested. Evaluate the effectiveness of the chosen theory in that situation or circumstance. How will you apply this theory in other areas of your practice? Discuss its relevance to research.

## Activity

You are planning a dinner party for yourself and five guests. You have decided on the following menu:

·         Onion soup with French bread

·         Roast chicken with boiled mixed vegetables

·         Pie with hot chocolate sauce

·         Two bottles of a good red wine

Based on your past experience, you know the required time for various tasks are:

·         Cooking the onion soup:  30 minutes

·         Warming the bread in the oven:  10 minutes

·         Roasting the chicken in the oven:  45 minutes

·         Boiling the vegetables:  25 minutes

·         Warming the pie in the oven:  15 minutes

·         Cooking the chocolate sauce:  40 minutes

·         Serving and eating the soup:  20 minutes

·         Serving and eating the chicken:  25 minutes

·         Serving and eating the apple pie:  15 minutes

·         Opening wines: 5 minutes

·         Letting wines breathe: 30 minutes

Your plan is to go out together and catch a movie after the dinner party, so you want to finish preparing and eating your dinner as soon as possible. However, you have in your kitchen only one pot and a small oven that can hold only one item at a time.

Generate a WBS and a Gantt chart for the above dinner planning project using whatever program you prefer. You should Submit WBS, Gantt chart and responses to the following questions:

·         What is the shortest time to cook, serve and eat the meal, given the constraints?

·         Which path is the critical path?

·         Suppose you want to spend the least amount of money to reduce the total meal time, which item would you purchase? What is the reduced total meal time if you would make the purchase?

·         A pot

·         A bigger oven

·         Both a pot and a bigger oven

·         Discuss the impact and tradeoff of purchasing more items on the reduction of total meal time.

## 3 Physics problems

1) In the figure the battery has potential difference V = 13.5 VC2 = 3.30 μFC4 = 3.80 μF, and all the capacitors are initially uncharged. When switch S is closed, a total charge of 11.0 μC passes through point a and a total charge of 9.00 μC passes through point b. What are (a) C1 and (b) C3?

2) The figure shows a parallel-plate capacitor with a plate area A = 6.69 cm2 and plate separation d = 9.90 mm. The left half of the gap is filled with material of dielectric constant κ1 = 5.80; the right half is filled with material of dielectric constant κ2 = 14.7. What is the capacitance?

3) A certain cylindrical wire carries current. We draw a circle of radius r around its central axis in Figure (a) to determine the current i within the circle. Figure (b) shows current i as a function of r2. The vertical scale is set by is = 5.3 mA, and the horizontal scale is set by rs2 = 4.6 mm2(a) Is the current density uniform? (b) If so, what is its magnitude?

Kim’s friend John started taking a selective serotonin reuptake inhibitor for depression. His doctor told him that serotonin is a neurotransmitter. John asks Kim what a neurotransmitter is and if there is more than one neurotransmitter. What should Kim tell John? Include answers to the following in your response:

• Define the purpose of neurotransmitters.
• Describe the function of serotonin.
• Name three other neurotransmitters and describe their functions.

Carol is working in a nursing home and is approached by a woman whose mother is recovering from a stroke. The patient can speak but has difficulty understanding others. The woman wonders what area of the brain was damaged by the stroke. She also wonders how doctors can identify the location of the damage. Answer the following questions:

• Name the damaged area and describe its location.
• What area of the brain might be damaged if the patient could understand speech but didn’t make sense when she was speaking?
• Name each lobe of the cerebral hemispheres, describe the location, and give an example of a specific skill that could be affected if the lobes were damaged.
• Name and discuss three brain imaging techniques. Describe what happens to a patient during each of these techniques, what is measured, and what the test results look like.

Submit your document to the W1: Assignment 3 Dropbox by Saturday, July 1, 2017.

Cite any sources you use using the APA format on a separate page.

 Assignment 3 Grading Criteria Maximum Points Analyzed and defined the purpose of neurotransmitters. Analyzed and described the function of serotonin. Named three other neurotransmitters and described their functions. 10 Named the damaged area and described its location. Analyzed and identified the area that might be damaged if the patient could understand speech but didn’t make sense when she was speaking. Named each lobe of the cerebral hemispheres, described the location, and gave an example of a specific skill that could be affected if the lobes were damaged. Named and discussed three brain imaging techniques in detail. 10 Used correct spelling, grammar, professional vocabulary and APA format. 5 Total: 25

## Physics MID TERM

1

The vertical acceleration of a projectile

 a. equals g pointing sometimes upwards and other times downwards b. continuously increases c. equals g pointing downwards d. equals g pointing upwards e. is zero

Question 2

The horizontal acceleration of a projectile

 a. stays constant b. sometimes decreases and sometimes increases c. continuously increases d. is zero e. continuously decreases

Question 3

When an object reaches its terminal speed, its acceleration is zero.

Question 4

The horizontal speed of a projectile

 a. stays constant b. continuously decreases c. is zero d. continuously increases e. sometimes decreases and sometimes increases

Question 5

The vertical speed of a projectile

 a. is zero b. continuously increases c. stays constant d. sometimes decreases and sometimes increases e. continuously decreases

Question 6

All forces have specific directions associated with them.

Question 7

If object A has more mass than object B,

 a. A will weigh more than B. b. A will be harder to keep moving in a circle. c. A will be harder to accelerate than B. d. all of the above

Question 8

The force that keeps your feet from sliding as you walk is

 a. centripetal force b. kinetic friction c. static friction d. weight

Question 9

Two forces of 4 N and 12 N act on a body simultaneously. The net force on the body is

 a. 4 N b. 12 N c. impossible to tell from the given information d. 8 N e. 16 N

Question 10

As an object moves faster through the air, its terminal speed increases

Question 11

If the net force on an object is zero,

 a. the object’s acceleration must be zero b. the object must be at rest c. there must be no forces acting on the object d. there can be no friction acting on the object

Question 12

You are presently exerting a gravitational force on the earth.

Question 13

“Net force” means the vector sum of all the individual forces acting on a particular body.

Question 14

An example of an action at a distance force is

 a. static friction b. weight c. tension d. kinetic friction e. none of the above

Question 15

Which is larger, a newton or a pound?

 a. a pound b. This question is nonsense—they don’t measure the same physical quantity. c. a newton d. They are the same size.

## Electrical Paper

In this part of the term paper, you will explain why we need rectification and how to build a single-phase bridge rectifier.

Carefully review these detailed instructions for requirements of this term paper.. Use illustrations if necessary to complete the assignment.

1. Half-Wave Rectifier

In half-wave rectification of a single-phase supply, either the positive or negative half of the AC wave is passed, while the other half is blocked. Because only one half of the input waveform reaches the output, the DC output voltage is lower. Half-wave rectification requires a single diode in a single-phase supply. Rectifiers yield a unidirectional but pulsating direct current; half-wave rectifiers produce far more ripple than full-wave rectifiers, and much more filtering is needed to eliminate harmonics of the AC frequency from the output. Following is a Multisim simulation of a half-wave rectifier without a low pass filter.

Figure 1. Half-wave rectifier without a filter

Based on the output waveform, calculate the DC component using equation (5.16)

and the first harmonic of the output using equations (5.17)

and (5.18)                                                                               with h=1.

In order to block the harmonics and allow only the DC component to the load, a low pass filter is needed. This second order low pass filter consists of an inductor and a capacitor, with its corner frequency being well below the first harmonic frequency. The Multisim simulation with the filter included is shown in figure 2 below.

Figure 2. Half-wave rectifier with a low pass filter.

Calculate the corner frequency of the low pass filter to verify that it is much smaller than 60 Hz. Compare the DC output of the rectifier with the low pass filter and compare it to the earlier calculations. Comment on these results.

2. Full-Wave Rectifier

A full-wave rectifier converts the whole of the input waveform to one of constant polarity (positive or negative) at its output. Full-wave rectification converts both polarities of the input waveform to DC (direct current), and yields a higher DC output voltage. Two diodes and a center tapped transformer, or four diodes in a bridge configuration and any AC source (including a transformer without center tap), are needed. Figure 3 shows a bridge rectifier without a low pass filter.

Figure 3. Full-wave rectifier without a filter.

Based on the output waveform, calculate the DC component using equation (5.16) and the second harmonic of the output using equations (5.17) and (5.18) with h=2.

Again, in order to block the harmonics and allow only the DC component to the load, a low pass filter is needed. This second order low pass filter consists of an inductor and a capacitor, with its corner frequency being well below the second harmonic frequency. The Multisim simulation with the filter included is shown in figure 4 below.

Figure 4. Full-wave rectifier with a low pass filter

Again, calculate the corner frequency of the low pass filter to verify that it is much smaller than 120 Hz. Compare the DC output of the rectifier with the low pass filter and compare it to the earlier calculations.

Final question: why does the full-wave rectifier output not contain first harmonic, which is more difficult to filter?

Your paper should be at least two pages, typed single-spaced, using 12-point font and 1-inch margins on the top, bottom, right, and left. You should use the APA guidelines for writing and citations.

Keep the following points in mind:

·         The efficiency of a buck DC-DC converter.

·         The principle of a buck DC-DC converter.

## physics homework

Identify a similarity and a difference between two objects – one in static equilibrium and the other in dynamic equilibrium? Hint: think about net force and motion.

If we push an object at constant velocity, how much friction acts on the object compared to our pushing force: A) equal to the pushing force B) greater than the pushing force C) less than the pushing force D) none of the above

By how much does the gravitational force between two objects decrease when the distance between their centers is doubled? A) ½ B) ¼ C)1/8 D) 1/16 E)1/32

What happens to the acceleration of a cart if the force acting on it is quadrupled (i.e. multiplied by 4)

Tim stands in the middle of a scaffold. There is no motion. The left scale reads 450N. What is the reading on the right scale and the total weight of Tim and scaffold A) 450N and 900N B) 450N and 1200N C) 400N and 850N D) 250N and 700N E) 1050N and 1500N

What is the force of gravity on a 2kg mass 3.2*106m above the Earth’s surface. The mass of the earth is 6.4*1023kg and its radius is 6.4*106m. Hint: the total distance between the object and the earth is from the center of the earth to the location of the object.

If two objects – one three times as heavy as the other – are in free fall, which of these statements are true:

The force of gravity on the heavier object is 3 times that on the lighter object

Their speeds are increasing at the same rate i.e. they are falling at the same rate

The heavier object is falling much faster than the smaller object

All of the above B) none of the above C) I and II D) I and III E) I only

Which of these is not a law of motion? A) Action and reaction are equal and opposite B) The acceleration of an object is directly proportional to the net force acting on the object C) A body at rest or in motion continues in its state of rest or uniform motion unless a force is applied to it D) The earth always attracts objects to its center

Define terminal velocity? Can it be reached in a vacuum? Why or why not?

What is the difference between the atomic number and the mass number of an element?

Fusion is the source of energy in the sun. What is the difference between fission and fusion?

Which of these is not an element: A) O2 B) N2 C) He, D) Cl, E) HF?

What is the IUPAC name for KCl?

A radon atom emits a beta particle and then is irradiated with gamma rays, what is the final element? Its mass number and atomic number?

How many valence electrons are in these elements: a) oxygen b) boron c) silicon d) krypton

Which of these are true of gamma rays: i) Its frequency is lower than ultraviolet radiation ii) Gamma irradiation can be used to destroy harmful micro-organismsiii) They are electromagnetic waves iv) They can bring about genetic mutations in humans A) i only B) ii only C) ii, iii and iv D) all of the above E) none of the above

Which of these radioactive particles do not penetrate the skin? A) Alpha particle, B) beta-particle, C) gamma rays D) none of the above

What happens when an atom loses an electron? A) it becomes positively charged because there are more protons than neutrons B) it becomes positively charged because there are more protons than electrons C)it remains neutral D) it is a form of radioactive decay E) none of the above

When alpha particles pick up electrons, they become _________ A) Helium gas B) Hydrogen gas C) Lithium D) remain alpha particles E) none of the above

Hydrogen is the lightest (least heavy) element/gas. Why is it not used to fill children’s balloons? Why is helium used?

Why is there more carbon-14 in living bones than in once-living ancient bones of the same mass?