Category: Physics homework help

 
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In today’s fast-paced world, where stress and uncertainty seem to be constant companions, many individuals seek guidance and clarity through various means, one of which is consulting psychics. While the concept of psychics may conjure images of mysterious figures in dimly lit rooms, the reality is that psychic readings are now readily accessible over the phone, and at surprisingly affordable rates.
The allure of cheap psychics by phone lies in their convenience and accessibility. With just a simple phone call, individuals can connect with experienced psychics who offer insights into their past, present, and future. Whether seeking advice on love, career, finances, or spiritual matters, these phone psychics provide a valuable service to those in need.
But what sets affordable phone psychics apart from their more expensive counterparts? It’s not just about the price tag; it’s about the quality of the service they provide. Contrary to common misconceptions, cheap does not always equate to inferior. Many reputable phone psychic services carefully vet their psychics to ensure they possess genuine abilities and adhere to ethical standards.
Moreover, affordable phone psychics understand the importance of building trust and rapport with their clients. They approach each reading with empathy, compassion, and a genuine desire to help. By creating a supportive and nonjudgmental environment, they empower individuals to explore their concerns openly and honestly.
Another benefit of consulting cheap psychics by phone is the anonymity it affords. Unlike traditional face-to-face readings, phone readings offer a sense of privacy and discretion, allowing individuals to seek guidance without fear of judgment or scrutiny. This anonymity can be particularly appealing to those who are hesitant to share their deepest thoughts and feelings in person.
Furthermore, the accessibility of phone psychics means that individuals can seek guidance whenever they need it, day or night, without having to schedule appointments weeks in advance. This flexibility is especially valuable during times of crisis or uncertainty when immediate guidance is sought.
It’s essential to approach phone psychic readings with an open mind and realistic expectations. While psychics can provide valuable insights and guidance, they are not infallible or omnipotent. Ultimately, the decisions and actions we take are our own responsibility.
In conclusion, affordable phone psychics offer a valuable service to those seeking guidance and clarity in their lives. By providing convenient access to experienced psychics at reasonable rates, they empower individuals to navigate life’s challenges with confidence and insight. So, whether you’re at a crossroads in your career, facing relationship dilemmas, or simply seeking spiritual guidance, consider reaching out to a  cheap psychics by phone  —you may be pleasantly surprised by the wisdom they have to offer.

Fig 12 shows a body of weight 50N placed on a surface which is inclined at an angle of 30 to the horizontal . The body experiences a maximum frictional force of 29N with the surface.Determine the force required to move the body, up the inclined with constant velocity.

(‘) 1. Launch the simulation by pressing the triangle. Note this simulation may not run on Ipads. Take a few minutes to familiarize your self with the simulation. When you are done exploring, please press “reset all” before answering the questions.
(‘)) 2. Using the default values for the plate area and the distance between the plates, calculate the capacitance of the
capacitor in the picture.
3. Imagine that you have a capacitor with round plates, instead of the square plates shown in the simulation. In your capacitor with round plates, the separation between the plates is four times larger than the separation between the plates of the capacitor in the simulation. Calculate the radius of one of the round plates, if your capacitor has the capacitance you calculated above.
‘ Hint: What’s your area equation now?

I. Task 1 – Creating Frequency Distribution Tables and Graphs (Ch 2 of your textbook)
What you will submit for Task 1: Frequency table and bar chart for the variable “CORRECT” using data from the Caffeine study (see below)
Imagine that you were going to study the effects of caffeine on memory and you had 30 subjects who were willing to participate in your study. So you decide to split up the subjects by randomly assigning them to two groups:  15 subjects were assigned to the experimental group (given caffeine) and 15 subjects to the control group (given placebo which is fake caffeine pill).  You give the subjects the appropriate pill, give some time for the pills to take effect and then you give subjects the same amount of time to study the same list of 10 words and you give them a test to study their recall.  In this experiment, the independent variable (IV) is caffeine and the dependent variable (DV) is the # of correct answers on the memory test.  Enter the following data into SPSS
Column 1 =
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
2.00
2.00
2.00
2.00
2.00
2.00
2.00
2.00
2.00
2.00
2.00
2.00
2.00
2.00
2.00
Column 2 =
10
10
9
9
9
8
8
8
8
8
7
7
7
6
6
8
8
7
7
7
6
6
6
6
6
5
5
5
4
4
Save this data as you will use this in future SPSS assignments. I will refer to this data as the Caffeine study.
In Variable View: Name your variables (CAFFEINE and CORRECT), Specify Type (Numeric), Create Labels (Caffeine, Correct Answers), For the Caffeine Row specify what the values of “1” an “2” equal (1 = Caffeine; 2 = Placebo), Specify the types of measures (Nominal for Caffeine and Scale for Correct).
Go to the Analyze menu, Choose Descriptive Statistics, Choose Frequencies from the Descriptive Statistics Choices, Select the variable you are interested in (Choose “Correct Answers”) by highlighting it and using the arrow to move it over.
Make sure the Display Frequency Tables box is checked.
Click the Charts button. For Chart Type select Bar Chart and for Chart Values select Frequencies and select Continue.  (Note you can also create a pie chart and histogram here)
Click OK.
View your output that comes up in a new window. (Note – A reminder, for SPSS Assignment Part 1, you are submitting one single document). 
There are many ways to save your output. A nifty function that I like is to use the Export function.  This exports the data to an MS word doc which allows you to manipulate the data quite easily and put into one document.  To do this, in your data output, choose the icon that represents “Export” (or from the Files Section choose “Export”) and for “Objects to Export” select “All Visible” and then voila’!
II.  Task 2 – Calculating the Mean, Median and Mode in SPSS (Ch 4 of textbook)
What you will submit for Task 2: Table that shows the Mean, Median and Mode for the variable “CORRECT” from the data from the Caffeine study (i.e. data that you entered for Task 1)
Open the data of the Caffeine study (see Task I)
Go to the Analyze menu, Choose Descriptive Statistics, Choose Frequencies from the Descriptive Statistics Choices, Select the variable you are interested in (Choose “Correct Answers”) by highlighting it and using the arrow to move it over.
Click the button Statistics.
Take a look at your options. From the area labeled “Central Tendency”, choose Mean, Median and Mode and select Continue.
Click OK.
View your output that comes up in a new window. (Note – A reminder, for SPSS Assignment Part 1, you are submitting one single document). 
There are many ways to save your output. A nifty function that I like is to use the Export function.  This exports the data to an MS word doc which allows you to manipulate the data quite easily and put into one document.  To do this, in your data output, choose the icon that represents “Export” (or from the Files Section choose “Export”) and for “Objects to Export” select “All Visible” and then voila’!
III.  Task 3 – Calculating the Range, Minimum/Maximum, Interquartile and Standard Deviation in SPSS (Ch 5 of textbook)
What you will submit for Task 3: Table that shows the Range, Minimum/Maximum, Interquartile and Standard Deviation for the variable “CORRECT” from the data from the Caffeine study (i.e. data that you entered for Task 1)
Open the data of the Caffeine study (see Task I)
Go to the Analyze menu, Choose Descriptive Statistics, Choose Frequencies from the Descriptive Statistics Choices, Select the variable you are interested in (Choose “Correct Answers”) by highlighting it and using the arrow to move it over.
Click the button Statistics.
From the area labeled “Percentile Values” select Quartile, and from the area labeled “Dispersion” select Range, Minimum/Maximum, and Standard Deviation and select Continue.
Click OK.
View your output that comes up in a new window. (Note – A reminder, for SPSS Assignment Part 1, you are submitting one single document). 
There are many ways to save your output. A nifty function that I like is to use the Export function.  This exports the data to an MS word doc which allows you to manipulate the data quite easily and put into one document.  To do this, in your data output, choose the icon that represents “Export” (or from the Files Section choose “Export”) and for “Objects to Export” select “All Visible” and then voila’!
IV.  Task 4 – Creating Graphs in SPSS (Ch 6 of your textbook)
What you will submit for Task 4:
For the variable “CAFFEINE”: A Bar of Counts chart and a Pie of Counts chart.
For the variable “Correct Answers”, a Histogram with Normal Distribution.
For each group (Caffeine and Placebo) submit a bar chart that compares the means of their “Correct Answers”.
Open the data of the Caffeine study (see Task I)
From the top menu select Graphs, then select Graphboard Template Chooser. A new window will come up and now select the Variable “CAFFEINE”. Then select the icon Bar of Counts and click OK.
Repeat the same steps that you just did in “b” above but instead of selecting the Bar of Counts option, select the Pie of Counts option and click OK. (Note: SPSS gives you the best chart options based on the type of variable under review.  Since the “CAFFEINE” variable is a categorical variable, it gives you these appropriate chart options.)
Select a new variable to review. From the top menu select Graphs, then select Graphboard Template Chooser.  A new window will come up and now select the Variable “Correct Answers”. Then select the icon Histogram with Normal Distribution and click OK.
From the top menu, select Graphs, Legacy Dialogues, and then Bar. A new window will appear, click the Simple icon and click button Define.  You will now need to select the variable “CAFFEINE” and use arrow to put in the box labeled “Category axis”. Next under the category “Bars Represent” select the button Other Statistic (e.g. “mean”).  This will allow you to select the other variable “Correct Answers” which you will use the arrow to put in the box labeled “Variable”.  Click OK.
View your output that comes up in a new window. (Note – A reminder, for SPSS Assignment Part 1, you are submitting one single document). 
There are many ways to save your output. A nifty function that I like is to use the Export function.  This exports the data to an MS word doc which allows you to manipulate the data quite easily and put into one document.  To do this, in your data output, choose the icon that represents “Export” (or from the Files Section choose “Export”) and for “Objects to Export” select “All Visible” and then voila’!
IV.  Task 5 – Calculating a Z score in SPSS (Ch 7 of your textbook)
What you will submit for Task 5: Answers to the following questions:
What is the Z score for a participant who scored a “10” on their memory recall test (view column “CORRECT” for # of questions correct on the memory recall test)?
What is the Z score for a participant who scored a “9” on their memory recall test?
What is the Z score for a participant who scored a “8” on their memory recall test?
What is the Z score for a participant who scored a “6” on their memory recall test?
What is the Z score for a participant who scored a “5” on their memory recall test?
What is the Z score for a participant who scored a “4” on their memory recall test?
There are two ways to calculate a Z score in SPSS.  You will learn both ways, the easy way and the harder way.  You will learn the harder way as this knowledge will be relevant for later SPSS activities.
Open the data of the Caffeine study (see Task I)
Go to the Analyze menu, Choose Descriptive Statistics, Choose Descriptives, Select the variable you are interested in (Choose “Correct Answers”) by highlighting it and using the arrow to move it over.
Select the option Save standardized values as variables and click OK.
A new window will open with your data output which will show the mean and standard deviation for your variable (write these down now as you will need these in the steps to come).
Now go back to your data and if it is not selected click the Data View tab (on the bottom next to Variable View). You will now notice a new column that details your Z scores for each subjects scores on their memory test.  You can use these to answer the questions for this task.
Using our same data from the Caffeine study, find a Z score the harder way.
From the top menu, select Transform, then Compute Variable. A new window will appear, type in “Next Z score” or whatever you want to call it in the “Target Variable” box.  Right below, select your variable “Correct answers”, press the arrow which will move the variable to the “Numeric Expression” box which is where you will do your Z calculation.  Now create the formula for the Z score which will look like:  
(CORRECT – Mean) / Standard Deviation.  See “c” above if you forgot to write down the mean and standard deviation for your memory scores.

I. Task 1 – Creating Frequency Distribution Tables and Graphs (Ch 2 of your textbook)
What you will submit for Task 1: Frequency table and bar chart for the variable “CORRECT” using data from the Caffeine study (see below)
Imagine that you were going to study the effects of caffeine on memory and you had 30 subjects who were willing to participate in your study. So you decide to split up the subjects by randomly assigning them to two groups:  15 subjects were assigned to the experimental group (given caffeine) and 15 subjects to the control group (given placebo which is fake caffeine pill).  You give the subjects the appropriate pill, give some time for the pills to take effect and then you give subjects the same amount of time to study the same list of 10 words and you give them a test to study their recall.  In this experiment, the independent variable (IV) is caffeine and the dependent variable (DV) is the # of correct answers on the memory test.  Enter the following data into SPSS
Column 1 =
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
2.00
2.00
2.00
2.00
2.00
2.00
2.00
2.00
2.00
2.00
2.00
2.00
2.00
2.00
2.00
Column 2 =
10
10
9
9
9
8
8
8
8
8
7
7
7
6
6
8
8
7
7
7
6
6
6
6
6
5
5
5
4
4
Save this data as you will use this in future SPSS assignments. I will refer to this data as the Caffeine study.
In Variable View: Name your variables (CAFFEINE and CORRECT), Specify Type (Numeric), Create Labels (Caffeine, Correct Answers), For the Caffeine Row specify what the values of “1” an “2” equal (1 = Caffeine; 2 = Placebo), Specify the types of measures (Nominal for Caffeine and Scale for Correct).
Go to the Analyze menu, Choose Descriptive Statistics, Choose Frequencies from the Descriptive Statistics Choices, Select the variable you are interested in (Choose “Correct Answers”) by highlighting it and using the arrow to move it over.
Make sure the Display Frequency Tables box is checked.
Click the Charts button. For Chart Type select Bar Chart and for Chart Values select Frequencies and select Continue.  (Note you can also create a pie chart and histogram here)
Click OK.
View your output that comes up in a new window. (Note – A reminder, for SPSS Assignment Part 1, you are submitting one single document). 
There are many ways to save your output. A nifty function that I like is to use the Export function.  This exports the data to an MS word doc which allows you to manipulate the data quite easily and put into one document.  To do this, in your data output, choose the icon that represents “Export” (or from the Files Section choose “Export”) and for “Objects to Export” select “All Visible” and then voila’!
II.  Task 2 – Calculating the Mean, Median and Mode in SPSS (Ch 4 of textbook)
What you will submit for Task 2: Table that shows the Mean, Median and Mode for the variable “CORRECT” from the data from the Caffeine study (i.e. data that you entered for Task 1)
Open the data of the Caffeine study (see Task I)
Go to the Analyze menu, Choose Descriptive Statistics, Choose Frequencies from the Descriptive Statistics Choices, Select the variable you are interested in (Choose “Correct Answers”) by highlighting it and using the arrow to move it over.
Click the button Statistics.
Take a look at your options. From the area labeled “Central Tendency”, choose Mean, Median and Mode and select Continue.
Click OK.
View your output that comes up in a new window. (Note – A reminder, for SPSS Assignment Part 1, you are submitting one single document). 
There are many ways to save your output. A nifty function that I like is to use the Export function.  This exports the data to an MS word doc which allows you to manipulate the data quite easily and put into one document.  To do this, in your data output, choose the icon that represents “Export” (or from the Files Section choose “Export”) and for “Objects to Export” select “All Visible” and then voila’!
III.  Task 3 – Calculating the Range, Minimum/Maximum, Interquartile and Standard Deviation in SPSS (Ch 5 of textbook)
What you will submit for Task 3: Table that shows the Range, Minimum/Maximum, Interquartile and Standard Deviation for the variable “CORRECT” from the data from the Caffeine study (i.e. data that you entered for Task 1)
Open the data of the Caffeine study (see Task I)
Go to the Analyze menu, Choose Descriptive Statistics, Choose Frequencies from the Descriptive Statistics Choices, Select the variable you are interested in (Choose “Correct Answers”) by highlighting it and using the arrow to move it over.
Click the button Statistics.
From the area labeled “Percentile Values” select Quartile, and from the area labeled “Dispersion” select Range, Minimum/Maximum, and Standard Deviation and select Continue.
Click OK.
View your output that comes up in a new window. (Note – A reminder, for SPSS Assignment Part 1, you are submitting one single document). 
There are many ways to save your output. A nifty function that I like is to use the Export function.  This exports the data to an MS word doc which allows you to manipulate the data quite easily and put into one document.  To do this, in your data output, choose the icon that represents “Export” (or from the Files Section choose “Export”) and for “Objects to Export” select “All Visible” and then voila’!
IV.  Task 4 – Creating Graphs in SPSS (Ch 6 of your textbook)
What you will submit for Task 4:
For the variable “CAFFEINE”: A Bar of Counts chart and a Pie of Counts chart.
For the variable “Correct Answers”, a Histogram with Normal Distribution.
For each group (Caffeine and Placebo) submit a bar chart that compares the means of their “Correct Answers”.
Open the data of the Caffeine study (see Task I)
From the top menu select Graphs, then select Graphboard Template Chooser. A new window will come up and now select the Variable “CAFFEINE”. Then select the icon Bar of Counts and click OK.
Repeat the same steps that you just did in “b” above but instead of selecting the Bar of Counts option, select the Pie of Counts option and click OK. (Note: SPSS gives you the best chart options based on the type of variable under review.  Since the “CAFFEINE” variable is a categorical variable, it gives you these appropriate chart options.)
Select a new variable to review. From the top menu select Graphs, then select Graphboard Template Chooser.  A new window will come up and now select the Variable “Correct Answers”. Then select the icon Histogram with Normal Distribution and click OK.
From the top menu, select Graphs, Legacy Dialogues, and then Bar. A new window will appear, click the Simple icon and click button Define.  You will now need to select the variable “CAFFEINE” and use arrow to put in the box labeled “Category axis”. Next under the category “Bars Represent” select the button Other Statistic (e.g. “mean”).  This will allow you to select the other variable “Correct Answers” which you will use the arrow to put in the box labeled “Variable”.  Click OK.
View your output that comes up in a new window. (Note – A reminder, for SPSS Assignment Part 1, you are submitting one single document). 
There are many ways to save your output. A nifty function that I like is to use the Export function.  This exports the data to an MS word doc which allows you to manipulate the data quite easily and put into one document.  To do this, in your data output, choose the icon that represents “Export” (or from the Files Section choose “Export”) and for “Objects to Export” select “All Visible” and then voila’!
IV.  Task 5 – Calculating a Z score in SPSS (Ch 7 of your textbook)
What you will submit for Task 5: Answers to the following questions:
What is the Z score for a participant who scored a “10” on their memory recall test (view column “CORRECT” for # of questions correct on the memory recall test)?
What is the Z score for a participant who scored a “9” on their memory recall test?
What is the Z score for a participant who scored a “8” on their memory recall test?
What is the Z score for a participant who scored a “6” on their memory recall test?
What is the Z score for a participant who scored a “5” on their memory recall test?
What is the Z score for a participant who scored a “4” on their memory recall test?
There are two ways to calculate a Z score in SPSS.  You will learn both ways, the easy way and the harder way.  You will learn the harder way as this knowledge will be relevant for later SPSS activities.
Open the data of the Caffeine study (see Task I)
Go to the Analyze menu, Choose Descriptive Statistics, Choose Descriptives, Select the variable you are interested in (Choose “Correct Answers”) by highlighting it and using the arrow to move it over.
Select the option Save standardized values as variables and click OK.
A new window will open with your data output which will show the mean and standard deviation for your variable (write these down now as you will need these in the steps to come).
Now go back to your data and if it is not selected click the Data View tab (on the bottom next to Variable View). You will now notice a new column that details your Z scores for each subjects scores on their memory test.  You can use these to answer the questions for this task.
Using our same data from the Caffeine study, find a Z score the harder way.
From the top menu, select Transform, then Compute Variable. A new window will appear, type in “Next Z score” or whatever you want to call it in the “Target Variable” box.  Right below, select your variable “Correct answers”, press the arrow which will move the variable to the “Numeric Expression” box which is where you will do your Z calculation.  Now create the formula for the Z score which will look like:  
(CORRECT – Mean) / Standard Deviation.  See “c” above if you forgot to write down the mean and standard deviation for your memory scores.

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The students will write a research paper on the First and Second Laws of Thermodynamics. This paper should include: what the first and second laws are, the 4 types of thermodynamic processes and how they relate to the first law (and which processes do Work), perpetual motion machines and how they relate to the second law, one implication of each law, one way each law impacts your everyday life, and a bibliography .

The students will write a research paper on the First and Second Laws of Thermodynamics. This paper should include: what the first and second laws are, the 4 types of thermodynamic processes and how they relate to the first law (and which processes do Work), perpetual motion machines and how they relate to the second law, one implication of each law, one way each law impacts your everyday life, and a bibliography .

 1. Rectilinear motion The evil Professor Mayhem is planning to drop a time-bomb from the top of a 180 m tall building. If the bomb hits the ground it will explode and destroy all of the new Adelaide University City. Even if it doesn’t hit the ground, the bomb is set to explode 24 s after its release. The superhero Mercurious is 864 m from the base of the building, at (x, y) = (0, 0), when he sees Professor Mayhem release the bomb. In an instant Mercurious works out that, assuming that t = 0 is when the bomb is released, he needs to run with super speed along a path described by the mathematical equation, 
x(t) = t ^3 − 36t^ 2 + Ct + D, in order to catch the bomb before it hits the ground, turn around and deposit it a safe distance from the city, and then turn around again and return before the bomb explodes. (a) Draw an appropriate sketch of the situation with Mercurious’s position (along the horizonal) at any time t identied by the function x(t), assuming all the action takes place to the left of the building (i.e., x < 0), and the bomb's vertical position at any time t during its fall is described by the function y(t) ≥ 0. (b) Determine the time it would take for the bomb to hit the ground if it falls under gravity with an acceleration of 10 ms^−2 . (c) Determine the parameters C and D if Mercurious runs and catches the bomb at the base of the building at the exact moment it would have hit the ground (at which point he also reverses direction for the rst time). (d) Determine where Mercurious leaves the bomb (at which point he simultaneously reverses direction a second time). (e) Determine Mercurious's position when the bomb nally explodes. (f) Determine Mercurious's maximum speed over the 24 s period. At what position(s) is he when this occurs?