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PHYSICS TEST-Continued
c
B
A
49. The most direct evidence for the theory of the
expansion of the universe is provided by which
of the following?
D
(A) Black holes
(B) Neutron stars
(C) Nebular remnants of supernovas
(D) Retrograde motion of the planets
(E) Redshift of light from a majority of galaxies
E
1
47. A satellite follows an elliptical orbit around a
planet, as shown in the figure above. At which
point is the speed of the satellite greatest?
9
4Be
+
(A) A
(B) B
(D) D
(E) E
d
Probe~
~of
12
6C
+ ...
50. In the nuclear transformation reaction above, the
missing particle is
(C) C
les
4
2He-7
(A) an electron
(B) a neutron
(C) an alpha particle
(D) a proton
(E) a positron
t1
spaceshiP~~
48. A spaceship and a probe are both moving at
relativistic speeds in the same direction, as
shown above. The spaceship is moving with a
speed of 0.7 e as measured by an observer on
Earth. A person on the spaceship observes the
probe passing at a speed of 0.6e relative to the
ship. Which of the following correctly describes
the speed v of the probe as measured by the
observer on Earth?
(A) 0 < v < O.Ie
(B) O.Ie < v < 0.6e
(C) 0.6e < v < 0.7e
(D) 0.7e < v < e
(E) e < v
I
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Running header: PHYSICS MULTIPLE CHOICE QUESTION
Physics multiple choice Question
Name:
Date:
Institution:
PHYSICS MULTIPLE CHOICE QUESTION
Quiz 1
C
Quiz 2
D
Quiz 3
B
Quiz 4
B
Quiz 5
D
Quiz 6
C Refraction.
Quiz 7
D diffraction
The phenomenon of splittin...
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Read Historical Fire: 1991 Imperial Foods Processing Plant, Hamlet, NC and watch the video Hamlet: The Untold Tragedy, 199 ...
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Read Historical Fire: 1991 Imperial Foods Processing Plant, Hamlet, NC and watch the video Hamlet: The Untold Tragedy, 1994. - Duration (22:33). After reading this article, watching the video, and completing the previous module activities, compose a paper to address the following questions/problems:Compare and contrast the Imperial Foods Plant Fire with the Triangle Shirtwaist Factory Fire.Although fire prevention and protection laws, technology, and engineering have advanced since the Triangle Shirtwaist Factory fire, we have still seen catastrophic losses in recent history as evident in the Imperial Foods fire in Hamlet, NC. Citing your evidence, discuss where and how Imperial Foods management could have incorporated fire protection technology/engineering or follow fire protection laws that came about during the 1900's after the Triangle Shirtwaist Factory fire.Formulate and support (or justify) an argument that fire prevention and protection are essential components of a safety, health, and environmental professional’s role on the job. Back up your argument with scholarly proof.FormatYour paper should be approximately 3-4 pages (not including the cover and reference pages) and follow APA format. You must provide one citation per page: one for the required reading along with at least two to three additional references. Use Microsoft Word or a comparable word processing software to construct your final paper, and be sure to put your last name and page number in the header or footer. DO NOT PDF your papers. Once your assignment is complete, access the activity link, and submit your assignment.
Need physics help with paraphrasing and adding a lab on the coefficient of friction.
1. In Part 1, did the force of
friction on the shoe depend on the weight of the shoe? If the two are related,
why ...
Need physics help with paraphrasing and adding a lab on the coefficient of friction.
1. In Part 1, did the force of
friction on the shoe depend on the weight of the shoe? If the two are related,
why are they? What is the slope of the line on the graph of force of friction
vs. weight, and what does that number represent? Explain using your data.
Answer
The equation for the force due to
friction is F=uN=umg
from this equation we can see
that u is the coefficient of friction and N is the normal force
The normal force is the weight of
the object so N=mg
We can see the relationship from
this equation
The more the force the more the
friction since the force is higher the downward force is more thus the object
.So the friction on the shoe does depend on the weight.
On our graph with force of
friction vs weight the slope is basically the value on the y divided by the x
axis values
Which in this case is the force
of friction divided by the weight
From our values if we divide the
force of friction by the weight we get the coefficient of friction
So the slope of the graph represents the coefficient of friction.
(8 points)
Score
2. Does an athletic shoe work better
on a basketball court than a dress or dance shoe? Why or why not? Explain using
data from Parts 1 and 2.
Answer: Friction depends on the nature of the surfaces and the force
pushing the surfaces together. I believe the athletic shoes would work better on a basketball court
when compared to a dress/dance shoes because the athletic shoes has a higher k
value when compared to the dress/dance shoes, which causes a good grip between
the court and the shoes and avoids sliding or slipping as the friction coefficient is higher as well as the consequent friction
force. A lower coefficient of friction between the surface and shoes makes it
uneasy for an athlete to perform as good as when there is a high coefficient of
force as lower coefficient makes it more difficult as there are higher chances
for the shoe to slide on
the court. Shoes affect our performance and how
we function. Also an athletic shoe would create more friction and also the
surface of the floor will give you a coefficient of friction that varies with
the combination of shoe and ground/floor.
(8 points)
Score
3. If you wanted the athletic shoe
to slide faster on a surface, what might you do to the shoe? Provide at least
two ways to make the shoe slide faster, and explain in terms of the force of
friction and the coefficient of friction.
Answer: In order
to allow the athletic shoes to slide faster on the surface we can either
lubricate it by apply oil or grease at the bottom of the shoes, which causes a
lower coefficient of friction which causes the shoes to slide off due to lower
contact between surface and shoes. The other way to change the material of the
soul of the shoes to a material, which causes a lower coefficient of
friction.what we have to remember is to reduce the k value in order to allow
the shoes to slide faster .
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Science in the MediaThere is nothing like reading a good book or watching a great movie for a little escapism and entertainment. With all of the television channels out there and access to the internet, you can watch just about anything you want at any time. In Unit 2, you talked about the science involved with technology, but in this Assignment, you are going to turn the tables and delve into how the media portrays science.How does a pop culture portrayal of science and scientists impact the average person’s view of what science is and how research is conducted? Can what is presented by the media affect how the general populace views a particular research field? What might the long-term impacts of such a depiction be? These are just a few questions that you will reflect upon in this Assignment.Your paper should address the following questions:When you hear the word “scientist” what do you envision? Which famous people or characters from the media come into your mind? What characteristics do they have in common? Discuss at least three characteristics of your vision of a scientist.Has your image of what a scientist does and how they look changed over time? If so, how has this changed and what influenced you?Are fictional scientists usually the heroes, villains, or a combination of the two? Provide at least two detailed examples to support your position.How is science portrayed in fictional media (television shows, movies, music, books, etc.)? Is it seen as a positive, negative, or neutral force in the world? Give specific examples supporting your position.Do you think the portrayal of scientists in the various forms of media influences how society views people in this profession? Why, or why not?Can the portrayal of science in media influence how certain research and technology is viewed, and accepted, by the general public (e.g., cloning)?Your Final Project should be written in an essay format, with an introduction and conclusion. The paper will require you to include details from research including the course materials and sources you locate on your own. Use APA format to cite your sources of information, both within parenthetical citations and also within a reference page at the end of the project.Basic Writing Expectations:A minimum of 1,500 words, not counting the title or reference pagesAt least 3 academic resources utilizedInclude a title page, double space, font size 10 or 12Include a highly developed viewpoint/thesis, purpose, and exceptional contentDemonstrate superior organization: use logicFree of grammar and spelling errorsNo evidence of plagiarism. Note: no more than 10% of your paper should be direct quotesUse the APA style for all in-text citations, references, and body of paper
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Critical Analysis and Application Exercise for Fire Cases
Read Historical Fire: 1991 Imperial Foods Processing Plant, Hamlet, NC and watch the video Hamlet: The Untold Tragedy, 199 ...
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Read Historical Fire: 1991 Imperial Foods Processing Plant, Hamlet, NC and watch the video Hamlet: The Untold Tragedy, 1994. - Duration (22:33). After reading this article, watching the video, and completing the previous module activities, compose a paper to address the following questions/problems:Compare and contrast the Imperial Foods Plant Fire with the Triangle Shirtwaist Factory Fire.Although fire prevention and protection laws, technology, and engineering have advanced since the Triangle Shirtwaist Factory fire, we have still seen catastrophic losses in recent history as evident in the Imperial Foods fire in Hamlet, NC. Citing your evidence, discuss where and how Imperial Foods management could have incorporated fire protection technology/engineering or follow fire protection laws that came about during the 1900's after the Triangle Shirtwaist Factory fire.Formulate and support (or justify) an argument that fire prevention and protection are essential components of a safety, health, and environmental professional’s role on the job. Back up your argument with scholarly proof.FormatYour paper should be approximately 3-4 pages (not including the cover and reference pages) and follow APA format. You must provide one citation per page: one for the required reading along with at least two to three additional references. Use Microsoft Word or a comparable word processing software to construct your final paper, and be sure to put your last name and page number in the header or footer. DO NOT PDF your papers. Once your assignment is complete, access the activity link, and submit your assignment.
Need physics help with paraphrasing and adding a lab on the coefficient of friction.
1. In Part 1, did the force of
friction on the shoe depend on the weight of the shoe? If the two are related,
why ...
Need physics help with paraphrasing and adding a lab on the coefficient of friction.
1. In Part 1, did the force of
friction on the shoe depend on the weight of the shoe? If the two are related,
why are they? What is the slope of the line on the graph of force of friction
vs. weight, and what does that number represent? Explain using your data.
Answer
The equation for the force due to
friction is F=uN=umg
from this equation we can see
that u is the coefficient of friction and N is the normal force
The normal force is the weight of
the object so N=mg
We can see the relationship from
this equation
The more the force the more the
friction since the force is higher the downward force is more thus the object
.So the friction on the shoe does depend on the weight.
On our graph with force of
friction vs weight the slope is basically the value on the y divided by the x
axis values
Which in this case is the force
of friction divided by the weight
From our values if we divide the
force of friction by the weight we get the coefficient of friction
So the slope of the graph represents the coefficient of friction.
(8 points)
Score
2. Does an athletic shoe work better
on a basketball court than a dress or dance shoe? Why or why not? Explain using
data from Parts 1 and 2.
Answer: Friction depends on the nature of the surfaces and the force
pushing the surfaces together. I believe the athletic shoes would work better on a basketball court
when compared to a dress/dance shoes because the athletic shoes has a higher k
value when compared to the dress/dance shoes, which causes a good grip between
the court and the shoes and avoids sliding or slipping as the friction coefficient is higher as well as the consequent friction
force. A lower coefficient of friction between the surface and shoes makes it
uneasy for an athlete to perform as good as when there is a high coefficient of
force as lower coefficient makes it more difficult as there are higher chances
for the shoe to slide on
the court. Shoes affect our performance and how
we function. Also an athletic shoe would create more friction and also the
surface of the floor will give you a coefficient of friction that varies with
the combination of shoe and ground/floor.
(8 points)
Score
3. If you wanted the athletic shoe
to slide faster on a surface, what might you do to the shoe? Provide at least
two ways to make the shoe slide faster, and explain in terms of the force of
friction and the coefficient of friction.
Answer: In order
to allow the athletic shoes to slide faster on the surface we can either
lubricate it by apply oil or grease at the bottom of the shoes, which causes a
lower coefficient of friction which causes the shoes to slide off due to lower
contact between surface and shoes. The other way to change the material of the
soul of the shoes to a material, which causes a lower coefficient of
friction.what we have to remember is to reduce the k value in order to allow
the shoes to slide faster .
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