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APEX Institute of Education *
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US HISTORY
Subject
Physics
Date
Dec 6, 2023
Type
Pages
12
Uploaded by ChancellorLionMaster953
4.4.3 Test (TST): Teacher-Scored Unit Test
Test
Physics Sem 1
Points Possible:
50
Name:
Hudson Kohler
Date:
In this test you will apply what you have learned in the unit. Please answer the questions
below. Submit this to your teacher when you are done.
Show all your work on this test.
Question 1 (2 points)
You are in a spaceship far outside our solar system. Inside your spaceship there is no gravity
and no air (and therefore no air resistance). If you toss a ball across the spaceship, how do
Newton’s laws predict its motion will change as it moves? (2 points)
Newtons first law says that the ball will continue without stopping. According to his second
law, if you apply fore to the ball it will accelerate and change direction based on the force
applied.
Question 2 (4 points)
You are in a gym. A basketball sits on a rack next to you while you punch a punching bag.
Name two action-reaction pairs that are present in this situation. (4 points)
When you exert force into the punching bag, the bag swings back, returning the force. The
force of gravity is pulling the ball down, while the rack pushed back up while holding the ball.
Question 3 (8 points)
Your go-cart breaks down right before the end of a race, so you have to push it over the
finish line. The go-cart has a mass of 85 kg.
a. What is the weight of your go-cart? (2 points)
The weight of the go-cart is 833 N.
b. How much force must you apply to give the go-cart an acceleration of 0.9 m/s
2
? (2 points)
You must apply 76.5 N of force.
c. If you push with a force of 350 N, what is the acceleration of the cart? (2 points)
350/85=4.12 m/s^2
d. Later, you are driving your friend's go-cart. If his cart has an acceleration of 5.5 m/s
2
and
the cart's engine is applying a forward force of 720 N, what is the mass of his go-cart? (2
points)
720/5.5= 130.91 kg
Question 4 (2 points)
You have a ball with mass 2.8 kg tied to a rope, and you spin it in a circle of radius 1.3 m. If
the ball is moving at a speed of 7 m/s, what is the centripetal force acting on the ball? (2
points)
mv
2
/r= 2.8*7
2
/1.3 = 105 N
Question 5 (13 points)
Trent and Dyson pull on opposite sides of a shopping cart that has a mass of 13 kg. Trent
pulls the cart to the right with a force of 85 N, and Dyson pulls the cart to the left with a force
of 96 N. (Assume there is no friction.)
a. Draw the free-body diagram of the shopping cart. (You do not need to draw it perfectly to
scale. Just make sure the directions are correct.) (3 points)
b. Write the expression for the net force on the shopping cart along the
y
-axis. (2 points)
F
net
=N-mg=0
c. Write the expression for the net force on the shopping cart along the
x
-axis. (2 points)
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Related Questions
A tip.instructure.com
'Despair Epi
www.youtuber
Recommender
tructions:
Read and analyze each question/problem carefully.
For each item, a correct answer is equivalent to 1 point, while problem-solving items are
for 2 points each.
Time
CLICK on the correct answer so that it will be submitted and recorded.
Attem
Once your answer is submitted it will be locked. Be sure of your answer.
16 H
Seco
Good luck!!!
Question 4
2 pts
Two point charges, 8x10 Cand -2x10-9 C are separated by 4 m. How
strong is he electric field (in N/C) midway between them?
22.5
O 900
O 45
O 13500
Next
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Question 7
For this course you will use APA (American Psychological Association)
format for citing references.
O True
O False
Question 8
The web is public domain -don't worry about plagiarizing from a website.
O True
O False
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OBJECTIVES
In this summative experiment, you are expected to...
prove and cite, by means of observations made on each simulation or activity, the concepts and principles underlying the interactive world of matter and the effects of forces and dynamics;
integrate the concepts of the properties of matter that involve intermolecular forces as physical characteristics of a physical world that we usually apply in everyday life situations;
acknowledge and appreciate the role of Physics in maximizing human productivity by solving problems we encounter everyday or minimizing the load of otherwise heavy tasks.
Materials: Task 2 --Hose with running water
Task 2 Got Pressured to Clean!
At 1:30 pm, lunch time was already over. It is a common activity in Japan schools to clean up before dismissal. She was stationed in the comfort room for today. She started to wipe the sink first.
Afterwards, she decided to proceed with the floor on which, much to her dismay, she found what appeared to be…
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Currently stuck on questions 2a and 2d. Thank you
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V-awu.aleks.com
A ALEKS - Aziz Fall - Knowledge Check
Fraction Calculator - Mat
E Knowledge Check
Question 12
Omar is putting money into a savings account. He starts with $650 in the savings account, and each week he adds $40.
Let S represent the total amount of money in the savings account (in dollars), and let W represent the number of weeks Omar has been adding
equation relating S to W. Then use this equation to find the total amount of money in the savings account after 11 weeks.
Equation: ]
D=0
Total amount of money after 11 weeks: $
arrow_forward
Direction: Express the following properties into MLT and FlT forms. Show your answers on
the space provided. You may express each property in any unit.
Property
Unit
MLT
FlT
1. Momentum
2. Power
3. Force
4. Specific Gravity
5. Specific Weight
6. Kinetic energy
7. Velocity
8. Acceleration
9. Density
10. Specific volume
arrow_forward
1 / 1|.
100% +| E
-
Paper Homework (counts as Reading
Assignment)
Рар
Solve the following two problems, showing all work and expressing your answer in the proper units. You
do not need to use the rules for significant digits, but the precision of your answer should be
comparable to the precision of the quantities given.
1. Note: Koalas tend to fall out of trees. Their skulls have properties that tend to protect them from
concussions and other damage, so we can be happy about that.
A koala falls 2.6 m from a tree. Calculate its velocity just before hitting the ground (unharmed).
Use the sign of the velocity to indicate direction (up or down).
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. Comment on any observation you made as you conduct the
simulation.
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Michael buys several bags of balloons. On the package, it says that each bag has 100 balloons. He opens the bags and only one of them has 100 balloons inside; the other bags either have too many or too few.
How would you describe the bag of balloons with 100 balloons inside?
a.) Neither accurate nor precise
b.) Both accurate and precise
c.) Accurate, but the precision cannot be determined
d.) Precise, but not accurate
e.) Accurate, but not precise
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1) In your own words, explain the Theory of this experiment.
2) In your own words, explain the Procedure of this experiment.
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EXPERIMENT ONE
The
graphs and determine the experimental values of the acceleration
due to gravity.
purpose
of this experiment is to use the given data to plot
A. The table below shows data taken in a free-fall experiment.
Measurements were made of the distance fall (y) at each of
four precisely measured times. Complete the table. Round
off to same number of decimal places, even if you carry
extra digits during your intermediate calculations.
Time, y,(m) y,(m)y,(m) y,(m) y,(m) FP (s*)
|(s)
|0.00
|0.00
0.00 0.00 J0.00 J0.00
0.50
1.0
1.4
1.1
1.4
1.5
0.75
2.6
3.2
2.8
2.5
3.1
4.8
8.2
1.00
4.4
5.1
4.7
4.8
1.25
7.9
7.5
8.1
7.4
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Direction: Analyze the diagram below. Solve for the unknown value.
note: please explain your answer thoroughly and do not forget to include the solution. thank you!
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Assignment Submission
For this assignment, you submit answers by questions. You are
required to use a new randomization after every 3 question
submissions.
Assignment Scoring
Your best submission for each question part is used for your score.
[-/5 Points]
DETAILS
SERPSE10 4.1.OP.001. O/6 Submissions Used
MY NOTES
ASK YOUR TEACHER
A chauffeur heads south with a steady speed of v, = 22.0 m/s for t, = 3.00 min, then makes a right turn and travels at v, = 25.0 m/s for t, = 2.80 min, and then drives northwest at
V3 = 30.0 m/s for t, = 1.00 min. For this 6.80-min trip, calculate the following. Assume +x is in the eastward direction.
(a) total vector displacement (Enter the magnitude in m and the direction in degrees south of west.)
magnitude
direction
o south of west
(b) average speed (in m/s)
m/s
(c) average velocity (Enter the magnitude in m/s and the direction in degrees south of west.)
magnitude
m/s
direction
o south of west
Need Help?
Read It
MY NOTES
ASK YOUR TEACHER
SERPSE1041 OP 003…
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Instructions: Your task is to create a model in response to the prompts in the question below. Be sure to apply a model from this class and include the relevant diagram(s) for that model. And don’t forget to use the Claim, Evidence, Reasoning framework to present your solution.
Phenomenon: Runaway Truck Ramp
A truck was driving on a highway at 30 m/s when its brakes gave out. The driver steered it onto a “runaway truck ramp”, consisting of an upward ramp (rising 12 meters vertically over 120 meters horizontally), and ending with a compressible barrier which you can model as a giant spring with spring constant “k”. The compressible barrier can be compressed by a maximum 0.5 meters before it stops working.
Graphic attached
Values: Mass of the truck: 20 metric tons (1 metric ton = 1000kg).
Mass of the driver: Choose a reasonable value.
Truck Ramp Dimensions: 12 meters vertical, 120 meters horizontal
Spring constant k= 6.0 x 107 J/m2.
Part 1: Big…
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Please help me with this question
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TEXT ANSWER
Question 6
Explain how the device in the diagram below works. Use at least three vocabulary terms
for this unit in your explanation.
Answer using 2 to 3 complete sentences.
H
Normal
Enter your answer here
||'
|||
|| C
BIUS X₂ X² EEAA
√x 2 Ix
300 ch bull
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Please answer and explain!
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cacn you please use the same terms as in the website for example F 2 on 3 i cannot understand what you worte there
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66/View
M Recibidos (1,308) -.
M Inbox (29) - kriver1...
OCengageBrain - Log...
Webex Mat 272
Citri
Objective
W
(2)
In this experiment you will calculate the power you
develop when climbing a flight of stairs.
The SI unit of power is a watt (W), which is equivalent
to a J/s.
Apparatus
When James Watt invented his steam engine, he was
asked how many horses the engine could replace. To
find out, he built a rope-and-pulley device with which
he could measure the time it took a horse to lift var-
ious weights.
Stairs, Stopwatch, Meter stick.
Theory
Consider the (rather crude) person climbing a flight Watt defined horsepower as the power a horse can
produce steadily for a sustained period of time. The
SI equivalent of one horsepower is 746W.
of stairs as shown below.
Procedure
1. Record your weight in lb on the Data Sheet; ap-
proximate if you do not know. Convert this to
N.
2. Take a stopwatch and meter stick and locate
Some stairs that can be used for the experiment.
You want to climb at…
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The class I'm taking is physics for scientists and engineers!
I am completely stuck. Need help. I have attached the problem. Please view both attachments before answering.
*****I need help with parts D and F please. ******
***please use SI units and report the numeric part only for all answers!***
I have also attached the links to BOTH videos below. If you can please explain your answer so I can fully understand. Thank you so much!
Link: https://youtu.be/eK7dMnnElx8Link: https://youtu.be/4IYDb6K5UF8
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Solve step by step
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Your answers are saved automatically.
Remaining Time: 56 minutes, 58 seconds.
Question Completion Status:
QUESTION 1
Problem
A new type of force was discovered by physicists with the following expression:
a
%3D
Fnew=+Be*+ 3x
where alpha & beta are constants, and x is the position. The expression above was obtained from the interaction ofa massless Higgs Boson (a type of particle) and a black hole.
Quantum physicists then decides to design and build a machine that is able to move the Higgs Boson from x2 to x1. How much work should the machine do to achieve this feat? (For simplicity,
consider that no energy is lost in the process)
Solution
To determine the work done we apply the following
W =
dx
Evaluating the above, we get
W=
for the limits from xi to xf
substituting x1 and x2 as the limits, the work done is expressed as
| + B
X1.
( xq5
x25 )
Click Save and Submit to save and submit. Click Save All Answers to save all answers.
P Type here to search
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Directions: Read the following problem and solve the following questions. Show your complete solutions in the space provided.
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1
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Write an explanation or narration about the given problem why the problem got these answers shown in the photos. Narrate the solution in the given picture below. The narration must include the following parts:
1. Dissect the problem by explaining the illustration
2. Identify the given variables and the required ones
3. Explain the solution
4. Double check the solution by explaining why the values makes sense or using another way to verify the answer.
Problem: (The answer to this question is in the given picture)
1. A car travels to the east at a constant 50 km/h for 100 km. It then speeds up to 100 km/h and is driven another 100 km.
a. How long did the car took to travel 100 km at a speed of 50 km/h? Ans. 2.0 h
b. What is the car’s average velocity during the time interval? Ans. 67 km/h (E]
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Write an explanation or narration about the given problem why the problem got these answers shown in the photos. Narrate the solution in the given picture below. The narration must include the following parts:
1. Dissect the problem by explaining the illustration
2. Identify the given variables and the required ones
3. Explain the solution
4. Double check the solution by explaining why the values makes sense or using another way to verify the answer.
Problem: (The answer to this question is in the given picture)
A rolling ball moves from x1 = 3.4 cm to X2 = -4.2 cm during the time from t; = 3.0 s to t2 = 6.1 s. What is its average velocity? Ans. 0.78 cm/s
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Write an explanation or narration about the given problem why the problem got these answers shown in the photos. Narrate the solution in the given picture below. The narration must include the following parts:
1. Dissect the problem by explaining the illustration
2. Identify the given variables and the required ones
3. Explain the solution
4. Double check the solution by explaining why the values makes sense or using another way to verify the answer.
Problem: (The answer to this question is in the given picture)
A person with a black belt in karate has a fist that has a mass of 0.70 kg. Starting from rest, this fist attains a velocity of 8.0 m/s in 0.15 s. What is the magnitude of the average net force applied to the fist to achieve this level of performance?
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Okay so question 1 2 and 3 have been solved, the answers are
1. a = 3.5233 m/s^2
2. a = 4.7354 m/s^2
3. v = 8.3944 m/s
PLEASE SOLVE 3 THROUGH 4 ONLY, written work only please
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Please help me with the following and explain making sure the answer is really really correct 100%. I tried all kinds of calculations and it was wrong so I have no idea what's wrong. When I look at similar questions with different numbers it was 0. ... so i guess it has be something similar maybe but pleas make sure your work is correct pls pls ( wrong asnwer--> 1.31g and 1.35e-12)
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The sun radiates energy at the rate 3.8 × 1026 W.
The source of this energy is fusion, a nuclear
reaction in which mass is transformed into energy.
The mass of the sun is 2.0 × 1030 kg.
Part A
How much mass does the sun lose each year?
Express your answer using two significant figures.
AM = 1.3x1017 kg
Submit
Previous Answers
Part B
Review | Constants | Periodic Table
Correct
Correct answer is shown. Your answer 1.32-1017 = 1.32x1017 kg was either rounded differently or used a different
number of significant figures than required for this part.
What percentage is this of the sun's total mass?
Express your answer using two significant figures.
ΜΕ ΑΣΦ
?
хахь
* √x x x
X.10"
AM-6.6-10-16
Submit Previous Answers Request Answer
× Incorrect; Try Again; 5 attempts remaining
Part C
Estimate the lifetime of the sun.
Express your answer using two significant figures.
ΑΣΦ
t-15150000000
Submit Previous Answers Request Answer
?
× Incorrect; Try Again; 5 attempts remaining
years
%
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- A tip.instructure.com 'Despair Epi www.youtuber Recommender tructions: Read and analyze each question/problem carefully. For each item, a correct answer is equivalent to 1 point, while problem-solving items are for 2 points each. Time CLICK on the correct answer so that it will be submitted and recorded. Attem Once your answer is submitted it will be locked. Be sure of your answer. 16 H Seco Good luck!!! Question 4 2 pts Two point charges, 8x10 Cand -2x10-9 C are separated by 4 m. How strong is he electric field (in N/C) midway between them? 22.5 O 900 O 45 O 13500 Nextarrow_forwardQuestion 7 For this course you will use APA (American Psychological Association) format for citing references. O True O False Question 8 The web is public domain -don't worry about plagiarizing from a website. O True O Falsearrow_forwardOBJECTIVES In this summative experiment, you are expected to... prove and cite, by means of observations made on each simulation or activity, the concepts and principles underlying the interactive world of matter and the effects of forces and dynamics; integrate the concepts of the properties of matter that involve intermolecular forces as physical characteristics of a physical world that we usually apply in everyday life situations; acknowledge and appreciate the role of Physics in maximizing human productivity by solving problems we encounter everyday or minimizing the load of otherwise heavy tasks. Materials: Task 2 --Hose with running water Task 2 Got Pressured to Clean! At 1:30 pm, lunch time was already over. It is a common activity in Japan schools to clean up before dismissal. She was stationed in the comfort room for today. She started to wipe the sink first. Afterwards, she decided to proceed with the floor on which, much to her dismay, she found what appeared to be…arrow_forward
- Currently stuck on questions 2a and 2d. Thank youarrow_forwardV-awu.aleks.com A ALEKS - Aziz Fall - Knowledge Check Fraction Calculator - Mat E Knowledge Check Question 12 Omar is putting money into a savings account. He starts with $650 in the savings account, and each week he adds $40. Let S represent the total amount of money in the savings account (in dollars), and let W represent the number of weeks Omar has been adding equation relating S to W. Then use this equation to find the total amount of money in the savings account after 11 weeks. Equation: ] D=0 Total amount of money after 11 weeks: $arrow_forwardDirection: Express the following properties into MLT and FlT forms. Show your answers on the space provided. You may express each property in any unit. Property Unit MLT FlT 1. Momentum 2. Power 3. Force 4. Specific Gravity 5. Specific Weight 6. Kinetic energy 7. Velocity 8. Acceleration 9. Density 10. Specific volumearrow_forward
- 1 / 1|. 100% +| E - Paper Homework (counts as Reading Assignment) Рар Solve the following two problems, showing all work and expressing your answer in the proper units. You do not need to use the rules for significant digits, but the precision of your answer should be comparable to the precision of the quantities given. 1. Note: Koalas tend to fall out of trees. Their skulls have properties that tend to protect them from concussions and other damage, so we can be happy about that. A koala falls 2.6 m from a tree. Calculate its velocity just before hitting the ground (unharmed). Use the sign of the velocity to indicate direction (up or down).arrow_forward. Comment on any observation you made as you conduct the simulation.arrow_forwardMichael buys several bags of balloons. On the package, it says that each bag has 100 balloons. He opens the bags and only one of them has 100 balloons inside; the other bags either have too many or too few. How would you describe the bag of balloons with 100 balloons inside? a.) Neither accurate nor precise b.) Both accurate and precise c.) Accurate, but the precision cannot be determined d.) Precise, but not accurate e.) Accurate, but not precisearrow_forward
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