Lab 1_ Report Questions
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Nicole Caringal
Professor Mohammadi
Physics 207
26 September 2022
Lab 1: Report Questions
Discuss the limitations of these methods for calculating π. Which method was the best? The worst? Are there improvements to be made?
In measurement 1, the limitation for calculating π was the measuring tape. The measuring tape could only measure values up to an approximate milimeter of the objects, which were observed by eye rather than being measured as precisely as a digital tool. Additionally, the location of the diameter was approximated rather than being precisely indicated, which could further contribute to the measurement of the diameter being off by about a milimeter. The limits in measurement 2 would be the use of straight objects to form a circle, and the small area of the lab desk to form it. The limit in measurement 3, similar to measurement 2, is the use of straight lines to approximate the circumference of a large area represented
on a map. The best method would be measurement 1, as it provides the best precision for measurement since the objects were round and measurable to scale. The worst would be measurement 2, as there was a
limited area to create a circle with straight objects, so it would be the worst at representing the value of pi.
Measurement 3 could be improved upon with the addition of a curved or circle measuring tool to take into
account the circle shape of the landmark.
Determine the uncertainty of your density measurement. This will involve some algebraic calculation. You can find some pointers here: Info about error analysis
. Next, find an online database that you can use to lookup the density of various woods. Try to match your piece of wood with a known tree. Discuss whether you can be certain of your identification.
0.04 g/cm^3 is the uncertainty of the density measurement. With the calculated density of the wood being 0.6501g/cm^3, the wood that matched this the closest was beech. Considering the uncertainty of the density measurement, accounting for ±0.04g/cm^3, there can be no definite certainty of
the identification because many wood types fall within this range for density values.
Based only
on your experimental data, can you say how the time for one swing relates to the length of the pendulum? Is there a clear functional dependence? What could you do to make the experiment better?
The relationship between time, y, and the length of the pendulum, x, within the frame of one swing can be described as y = x^1/2. As the length of the pendulum increased, so did the length of the
time for the completion of one swing. However, some factors could be improved upon in the experiment.
One would be the angle of the swing. The rope could be held up at a constant height while there would be a marker indicating an angle where the mass could consistently be swung from. Another would be an automatic timer that could more accurately start and end the timer for each swing.
Is there a correlation between the circumference of someone's head and the time between heartbeats? Would you expect there to be one?
There is no clear correlation, as the graph does not show a clear pattern in the increase or decrease of head size as time between heartbeats increases. There was no expectation for there to be one though since the rate of a heartbeat is not affected by the dimension of someone’s head, but by the person’s physical activity.
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Related Questions
6 identical spherical water droplets of radius 22 mm combine to form a single spherical droplet Determine the radius of the combined droplet to 3 significant figures.
Part A
Iνα ΑΣΦ
mm
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Question 6
The scientific notation of 0.00014872 is 1.4872×10-3.
True
False
1 pts
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Question 3/ 10
Two students made an experiment to measure the value of n, the first one had ny = 3.1310.02 and T, = 3.1520.01,
which of the following statements best describes these results: ( if n = 3.14)
Student two is more precise and less accurate than student one
Student one is more precise than student two
3. O Student two is more precise than student one
Student one is more precise and more accurate than student two
1.
2.
4.
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3
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3. Absolute, fractional, and percentage uncertainties
a. What is the absolute uncertainty for the following measurements? 5.8 cm, 5.6 cm, 5.7 cm, 5.4 cm, 5.4 cm, 5.6 cm
b. Determine the fractional uncertainty in part a.
c. Determine the percentage uncertainty in part a.
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Question 1
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Pre-laboratory Experiment 1 Q.1) What are the objectives of today’s experiment? Q.2) What are the different types of error? Q.3) When writing a number as d ± ∆d, what does ∆d mean? Q.4) Define Density. What are the units of density? Q.5) Explain accuracy and uncertainty Q.6) Describe briefly how you would use a Vernier caliber to measure the length of an object.
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Post-Lab Homework Problems.
1. A student is using a track photogate to determine the
time it takes her to run 50 meters. She records the
following times:
Trial
Time
(seconds)
1
5.420
5.464
3
5.728
4
5.496
5
5.644
6.
5.794
7
5.540
The data she collects has a mean of 5.583714 seconds, with
an absolute uncertainty computed to be 0.141074 seconds.
Report her 50-meter time as a confidence interval
(a)
using the mean and the absolute uncertainty given above.
Another student measures his 200-meter run time
(b)
to be 20.7 + 0.3 seconds. Report the relative uncertainty of
each student and identify which has the more precise run
time.
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tabletop
91.41m±0.05m
cube ruler
clipper
micrometer Triple beam balai digital balance
3.30cm±0.05cm 2.184±0.001cm 27.310±0.005mm 64.42±0.05g 64.58±0.01g
2.92m±0.05m 2.71cm±0.05cm 2.482±0.001cm 25.251+0.005mm
216.20m±0.05m 2.50cm±0.05cm 3.136±0.001cm 34.140±10.0005mm
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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)
When a 58-g tennis ball is served, it accelerates from rest to a speed of 45 m/s. The impact with the racket gives the ball a constant acceleration over a distance of 44 cm. What is the magnitude of the net force acting on the ball?
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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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Practice Problems
PHSC : 1004
8/25/2024
12. 5 miles ·(1.609 ) = 8.045 km
mile
Gabriela Ibana
or round up to 2 decimal places
= 8.05 km
(1000) = 0.252
m
13 252 mm
.
14.1% (365). (2014). (cont) = 525, 600 minutes
5280
17. 3.45kx (1609 km). (S2B0A) = 11, 321ft
18. 18 (24h). ( 60m/h). (bosec
=
86,400 sec
ты
Y
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Pls solve this question correctly instantly in 5 min i will give u 3 like for sure
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Analyze the results
Dependent
Нурothesis
Teat the hypothenis
Draw a conclusion
Bix
Beientifie Method
Independent
Question/Problem
Observation
(1).
is a proces that involves observation, data
gathering, experimentation and analysis. This method is composed of (2)
of the world around you
steps. By making a detailed (3).
This
through your senses, you can be able to formulate a (4).
where you
step will lead you to an educated guess called (5)
can have tentative answer to your question. In order for you to prove your educated
by designing and conducting an
guess you need to (6).
experiment. In the experiment you need to identify the variables present and these
and (8).
variables. The data
are the (7).
The summarized
from the experiment will be collected to (9)
resulte from the experiment will determine whether the hypothesis is accepted or
rejected and that is where you (10).
2 de
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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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3. A car accelerates uniformly from rest and travels a distance of (100 ± 1) if the acceleration of thr car is (6.5 ± 0.5) m/s2 what would be its final velocity together with its associated uncertainty, at the end of the distance covered?
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C. leas t del Niu
3. Three students make measurements (in m) of the length of a rod using a meter stick. Each
student's measurements are tabulated in the table below. Using your calculator in statistic
mode calculate the mean L, standard deviation S and uncertainty u of the measurements.
Student
L1
L3
L2
1.4711
L4
1.4715
SD
u
Student 1
1.4717
1.4722
1,4716
t.4754
1.4710
1.4753
1.4759
1.4756
1.4749
Student 2
Student 3
1.4719
1.4723
1.4705
1.4719
Note that the actual length of the rod is determined by a laser measurement technique to be
1.4715 m (this should be considered the standard value).
a) State how one determines the accuracy of a measurement. Apply your idea to the
measurements of the three students above and state which student has the most
accurate measurement.
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1
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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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Simple Pendulum Experiment
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2. Give a introduction to the simple pendulum experiment.
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Solve plz
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True or false
1. The unit-factor method is used as a validity
tool in deriving equations.
2. Kinetic energy is dependent on the mass and
velocity of an object.
3. Acceleration is speed with direction.
4. Physical change in matter alters its
appearance and identity.
5. Height is the greatest measurement of a 3D
object.
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eets.co.
CormmonLit | MY A.
Name:
Date:
PHYSICS
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print out the exam unless you wish.
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• Write the correct equation, and use the correct equation to solve for the answer.
• Show all steps of the calculation,
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• Circle the final answer. Write neatly. Use dark pencil or blue ink or black ink.
• With your smart phone, take a photograph (or photographs) of your work. Upload
the photographs of your caleulations to CTLS. (digital sessions, lesson upload)
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Speeds of cars recorded by a police officer using a radar gun.
Part 1
Which of the following would be random errors in this situation? Select all that apply.
A.
Errors made by using a radar gun that is incorrectly calibrated and consistently reads high or low.
B.
Errors made by the police officer in reading the radar gun.
C.
Errors in the speedometers of the cars observed.
D.
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E.
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F.
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1
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