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The Simple Pendulum Lab 10
Lab Assignment 10: The Simple PendulumInstructor’s Overview
The pendulum is an excellent illustrative example of simple ...
The Simple Pendulum Lab 10
Lab Assignment 10: The Simple PendulumInstructor’s Overview
The pendulum is an excellent illustrative example of simple harmonic motion.
Walker's Physics has a great anecdote of Galileo's observation of oscillating
chandeliers and his subsequent experiments on the simple pendulum. In this
lab, we will replicate Galileo's experiment to gain insight into the physics of the
pendulum. We'll improve on the accuracy of his results by using a stop watch
instead of our pulses to measure the period of the pendulum!
This activity is not based on an eScience experiment, although we will some
material from the kit for the experiment. For further background on the
pendulum, refer to Walker's Physics, Section 13-6.
Lab Instructions
1.
2.
3.
4.
5.
6.
7.
8.
Cut a one meter length of fishing line.
Tie six washers onto the end of the fishing line.
Tie the other end of the line to a feature attached to a ceiling such as a
stationary ceiling fan. If this is not available, you can recruit an assistant to
hold the line in a very stable fashion.
Measure the distance from the holding point to the center of the washers.
This is the effective length of the pendulum. Record this value in the table
below.
Move the weights no more than 20 degrees from equilibrium and let go.
With a stopwatch, time 10 periods (complete oscillations).
Divide the total time by 10 to get the average period for this pendulum.
Record this value in the table below.
Repeat steps 4-7 for four other lengths. Suggested lengths: 100 cm, 80
cm, 60 cm, 40 cm, 20 cm. It is good experimental practice to randomize your
trials. For example, you could run in this order: 80 cm, 40 cm, 100 cm, 20
cm, 60 cm.
Take detailed notes as you perform the experiment and fill out the sections
below. This document serves as your lab report. Please include detailed
descriptions of your experimental methods and observations.
Date:
Student:
Abstract
Introduction
Material and Methods
Results
Data Table
Length
(meters)
Average period, T
(sec)
Average period squared, T2
(sec2)
Plots/Analysis
Create a plot of length (x-axis) versus average period (y-axis). You can use a
program such as Excel to generate your plot. Make sure to clearly label your
axes and indicate units.
Create a plot of length (x-axis) versus (average period)2 (y-axis). Use Excel to
add a linear trend line. Record the slope of the best fit line.
Recall that the period of an ideal simple pendulum is given by the following
relation:
Squaring both sides of the equation gives us this relation:
Using the slope of your T2 versus L plot, determine the acceleration due to
gravity.
Based on your results, please answer the following questions:
1.
2.
3.
4.
How close is your experimentally determined gravitational acceleration to
9.81 m/s2? What are potential sources for error in the experiment?
For small angles, does the pendulum's period of oscillation depend on the
initial angular displacement from equilibrium? Explain.
Why is it a good idea to use a relatively heavy mass in this experiment?
What would you say to a colleague that wanted to use only one washer as the
pendulum mass?
Use the relation of the period of an ideal simple pendulum, , to calculate
the ratio of the periods of identical pendulums on the Earth and on Mars.
Note: The gravitational acceleration on the surface of Mars is approximately
3.7 m/s2.
Conclusions
References
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You work for a pharmaceutical company where you are assigned the task of creating new drug therapies to treat thyroid disorders such as hyperthyroidism (high levels of T3 and T4) and hypothyroidism (low levels of T3 and T4). Your team has designed a few drugs, and your job is to identify which drug(s) would be successful in treating thyroid disorders based on your knowledge of thyroid hormone synthesis. Below is the list of drugs your team designed (all of these are hypothetical drugs).Peroxidine: A drug that inhibits thyroid peroxidase from functioningCimigine: A drug that inhibits potassium/iodine cotransporterIodimine: A drug that inhibits iodinase from functioningAldosine: A drug that inhibits production of angiotensinogen from the liverAldoramine: A drug that inhibits sodium/iodine cotransporterThyromine: A drug that stimulates thyroglobulin productionIdentify the drug(s) that would be successful in treating hyperthyroidism and hypothyroidism, and explain why and how they would be successful.Be detailed in your explanation and support your answer with facts from your textbook, research, and articles from scholarly journals. In addition, remember to add references in APA format to your posts to avoid plagiarism.
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De Anza College Greenhouse Gases and Rising Sea Level and their impact Paper
The question is in the ES online education assignment 6 file, just answer the question from the Es online Education Assign ...
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The question is in the ES online education assignment 6 file, just answer the question from the Es online Education Assignment 6.Here is the video that you need to watch to do the questions:How rising sea levels could displace millions of people: https://www.businessinsider.com/rising-sea-levels-study-millions-americans-affected-coastal-counties-2016-4?ref=yfp?r=UK&IR=TRising Sea Levels -- Changing Planet: https://www.youtube.com/watch?v=GHbkmGljo_MHow Whales Change Climate: https://www.youtube.com/watch?v=M18HxXve3CMAdditional Web Resource that might help for the homework:The Impacts of Climate Change: https://www.nationalgeographic.com/environment/global-warming/global-warming-effects/ENERGY AND THE ENVIRONMENT- EIA Web Resource- Energy and the Environment Explained: https://deanza.instructure.com/courses/8557/modules/items/518578
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The Simple Pendulum Lab 10
Lab Assignment 10: The Simple PendulumInstructor’s Overview
The pendulum is an excellent illustrative example of simple ...
The Simple Pendulum Lab 10
Lab Assignment 10: The Simple PendulumInstructor’s Overview
The pendulum is an excellent illustrative example of simple harmonic motion.
Walker's Physics has a great anecdote of Galileo's observation of oscillating
chandeliers and his subsequent experiments on the simple pendulum. In this
lab, we will replicate Galileo's experiment to gain insight into the physics of the
pendulum. We'll improve on the accuracy of his results by using a stop watch
instead of our pulses to measure the period of the pendulum!
This activity is not based on an eScience experiment, although we will some
material from the kit for the experiment. For further background on the
pendulum, refer to Walker's Physics, Section 13-6.
Lab Instructions
1.
2.
3.
4.
5.
6.
7.
8.
Cut a one meter length of fishing line.
Tie six washers onto the end of the fishing line.
Tie the other end of the line to a feature attached to a ceiling such as a
stationary ceiling fan. If this is not available, you can recruit an assistant to
hold the line in a very stable fashion.
Measure the distance from the holding point to the center of the washers.
This is the effective length of the pendulum. Record this value in the table
below.
Move the weights no more than 20 degrees from equilibrium and let go.
With a stopwatch, time 10 periods (complete oscillations).
Divide the total time by 10 to get the average period for this pendulum.
Record this value in the table below.
Repeat steps 4-7 for four other lengths. Suggested lengths: 100 cm, 80
cm, 60 cm, 40 cm, 20 cm. It is good experimental practice to randomize your
trials. For example, you could run in this order: 80 cm, 40 cm, 100 cm, 20
cm, 60 cm.
Take detailed notes as you perform the experiment and fill out the sections
below. This document serves as your lab report. Please include detailed
descriptions of your experimental methods and observations.
Date:
Student:
Abstract
Introduction
Material and Methods
Results
Data Table
Length
(meters)
Average period, T
(sec)
Average period squared, T2
(sec2)
Plots/Analysis
Create a plot of length (x-axis) versus average period (y-axis). You can use a
program such as Excel to generate your plot. Make sure to clearly label your
axes and indicate units.
Create a plot of length (x-axis) versus (average period)2 (y-axis). Use Excel to
add a linear trend line. Record the slope of the best fit line.
Recall that the period of an ideal simple pendulum is given by the following
relation:
Squaring both sides of the equation gives us this relation:
Using the slope of your T2 versus L plot, determine the acceleration due to
gravity.
Based on your results, please answer the following questions:
1.
2.
3.
4.
How close is your experimentally determined gravitational acceleration to
9.81 m/s2? What are potential sources for error in the experiment?
For small angles, does the pendulum's period of oscillation depend on the
initial angular displacement from equilibrium? Explain.
Why is it a good idea to use a relatively heavy mass in this experiment?
What would you say to a colleague that wanted to use only one washer as the
pendulum mass?
Use the relation of the period of an ideal simple pendulum, , to calculate
the ratio of the periods of identical pendulums on the Earth and on Mars.
Note: The gravitational acceleration on the surface of Mars is approximately
3.7 m/s2.
Conclusions
References
PHYS 261 West Coast University Thyroid Disorders Therapies Questions
You work for a pharmaceutical company where you are assigned the task of creating new drug therapies to treat thyroid diso ...
PHYS 261 West Coast University Thyroid Disorders Therapies Questions
You work for a pharmaceutical company where you are assigned the task of creating new drug therapies to treat thyroid disorders such as hyperthyroidism (high levels of T3 and T4) and hypothyroidism (low levels of T3 and T4). Your team has designed a few drugs, and your job is to identify which drug(s) would be successful in treating thyroid disorders based on your knowledge of thyroid hormone synthesis. Below is the list of drugs your team designed (all of these are hypothetical drugs).Peroxidine: A drug that inhibits thyroid peroxidase from functioningCimigine: A drug that inhibits potassium/iodine cotransporterIodimine: A drug that inhibits iodinase from functioningAldosine: A drug that inhibits production of angiotensinogen from the liverAldoramine: A drug that inhibits sodium/iodine cotransporterThyromine: A drug that stimulates thyroglobulin productionIdentify the drug(s) that would be successful in treating hyperthyroidism and hypothyroidism, and explain why and how they would be successful.Be detailed in your explanation and support your answer with facts from your textbook, research, and articles from scholarly journals. In addition, remember to add references in APA format to your posts to avoid plagiarism.
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