Application Paper Guidelines

Application Paper Task 1

Review the “Application Paper Guidelines.”

For task 1, identify an application of one or more concepts from this course. A list of possible topics has been provided in the “Application Paper Guidelines.”

To successfully complete task 1, do the following:

Briefly describe the application. This could be the draft for your introduction paragraph.

Provide a brief outline of the topics for each of the body paragraphs.

Prepare this assignment according to the guidelines found in the GCU Style Guide, located in the Student Success Center.

You are not required to submit this assignment to Turnitin.

PHY-102 Application Paper Guidelines

Overall Project Review

During this course, many concepts in the physical sciences will be examined in detail. You will select an application, research it, and write a 750-1,000 word paper on it. The following are brief descriptions of the project tasks:

Task 1: Identify your topic and write a brief outline.

Task 2: Submit your final paper.

Possible Topics for the Application Paper

These are just ideas. You are welcome to pick another topic. The purpose of Task 1 is for you to present your topic to your instructor and receive feedback on your plans.

The physics of a sport (pick one)

The physics of a bicycle (or any other machine)

The physics of car accidents

The physics of flying

The physics of space exploration

The camera

The combustion engine

The air conditioner

The chemistry of an element (or an atomic group of elements)

Nuclear medicine

Application of radioactivity (pick one)

Plastic – production and properties

Waste water treatment plants

The chemistry of a pharmaceutical (pick one)

The catalytic converter

The workings of a smokestack of a factory or a power plant

The chemistry of fertilizers

The chemistry of preservatives

Application Paper: Task 1

For Task 1, identify an application of one or more concepts from this course. A list of possible topics has been provided above.

To successfully complete task 1, do the following:

1. Briefly describe the application. This could be the draft for your introduction paragraph.

2. Provide a brief outline of the topics for each of the body paragraphs.

Application Paper: Task 2

Using the work you completed in Task 1, write your application paper, which should be 750-1,000 words.

Include the following:

1. An introduction.

2. A minimum of three body paragraphs each describing some aspect of the application. Make sure to include how each aspect relates to one or more concept(s) from this course. You may choose to include the history of the application as one paragraph.

3. A concluding paragraph.

4. You must use at least two scholarly sources in addition to the textbook as references to support your paper. Make sure to properly cite your sources.

Prepare this assignment according to the guidelines found in the GCU Style Guide, located in the Student Success Center.

This assignment uses a rubric. Please review the rubric prior to beginning the assignment to become familiar with the expectations for successful completion.

You are required to submit this assignment to Turnitin. Please refer to the directions in the Student Success Center.

Week 1 assignment

Motion Exercises

Complete the Motion Exercises.

GCU style is not required, but solid academic writing is expected.

You are not required to submit this assignment to Turnitin.

PHY-102: Motion Exercises

Complete the following exercises.

1. Jane is collecting data for a ball rolling down a hill. She measures out a set of different distances and then proceeds to use a stopwatch to find the time it takes the ball to roll each distance.

a. What is the independent variable in her experiment?

b. What is the dependent variable in her experiment?

c. Give one control variable for her experiment.

2. Consider an experiment where you drop an object.

a. Briefly describe your proposed experiment. (Make sure it is controlled).

b. What would be the independent variable for your experiment?

c. What would be the dependent variable for your experiment?

d. Give one control variable for your experiment.

3. Consider a freely falling object.

a. What is the acceleration (in m/s2) after 5 seconds of fall?

b. What is the acceleration (in m/s2) after 10 seconds of fall?

c. What is the velocity (in m/s) after 5 seconds of fall?

d. What is the velocity (in m/s) of 10 seconds of fall?

4. A sign is hung between two cables as illustrated below. If the sign weighs 350 N, what is the tension (in N) in each cable?

5. A construction worker on a high-rise building is on a platform suspended between two cables as illustrated below. The construction worker weighs 850 N, the plank weighs 450 N, and the tension in the left cable is 550 N.

a. What is the tension (in N) in the right cable?

b. Explain your answer.

6. Two forces of 50 N and 30 N, respectively, are acting on an object. Find the net force (in N) on the object if …

a. the forces are acting in the same direction

b. the forces are acting in opposite directions.

7. A box is pulled straight across the floor at a constant speed. It is pulled with a horizontal force of 48 N.

a. Find the net force (in N) on the box.

b. Find the force of friction (in N) from the floor on the box.

c. The person pulling on the box stops pulling and the box comes to a rest. Find the force of friction (in N) on the box when at rest.

8. A bowling ball rolls 32 meters in 0.8 seconds. Find the average speed (in m/s) of the bowling ball in m/s.

9. A car accelerates from 3.5 m/s to 17 m/s in 4.5 seconds. Find the acceleration of the car in m/s2.

10. Rank the following from lowest to highest:

a. The support force on you standing in an elevator at rest.

b. The support force on you standing in an elevator accelerating upward.

c. The support force on you standing in an elevator accelerating downward.

11. Describe the speed and acceleration of the ball released from the top of the track shown in the figure below.

12. Describe the speed and acceleration of the ball released from the top of the track shown in the figure below.

13. Describe the speed and acceleration of the ball released from the top of the track shown in the figure below.

14. You throw a ball upward with a speed of 14 m/s. What is the acceleration of the ball after it leaves your hand? Ignore air resistance and provide an explanation for your answer.

15. How would your answer to the previous question change if you take into account the effects of air resistance?

16. Describe the speed and acceleration of a person sky diving. Include in your explanation a description of the motion before the parachute is opened as well as a description of the motion after the parachute is opened.

17. A net force of 24 N is acting on a 4.0-kg object. Find the acceleration in m/s2.

18. A person pulls horizontally with a force of 64 N on a 14-kg box. There is a force of friction between the box and the floor of 36 N. Find the acceleration of the box in m/s2. Show your work.

The remaining questions are multiple-choice questions:

19. One difference between a hypothesis and a theory is that a hypothesis

A. is a guess that has not been well tested, whereas a theory is a synthesis of well-tested guesses.

B. is testable, whereas a theory is not testable.

C. can be revised, whereas a theory cannot be revised.

D. is not testable, whereas a theory is testable.

20. A car starts from rest and reached a speed of 24 m/s in 6 seconds. What is the acceleration of the car?

A. 144 m

B. 6 m/s2

C. 4 m/s2

D. 10 m/s2

E. 0 m/s2

21. Which of the following forces is NOT a contact force?

A. Friction force

B. Support force

C. Force of gravity

D. Tension force

22. If you pull horizontally on a desk with a force of 150 N and the desk doesn’t move, the friction force must be 150 N. Now if you pull with 250 N so the desk slides at constant velocity, the friction force is

A. more than 150 N, but less than 250 N.

B. 250 N.

C. more than 250.

23. Suppose a particle is accelerated through space by a constant 10 N force. Suddenly the particle encounters a second force of 10 N in a direction opposite to that of the first force. The particle

A. is brought to a rapid halt.

B. theoretically accelerates to speeds approaching the speed of light.

C. continues at the speed it had when it encountered the second force.

D. gradually slows down to a halt.

24. Newton’s First Law of Motion applies to

A. objects at rest only.

B. moving objects only.

C. both moving and nonmoving objects.

25. A freely falling object starts from rest. After falling for 2 seconds, it will have a speed of about

A. 5 m/s

B. 10 m/s

C. 20 m/s

D. 40 m/s

26. Suppose an object is in free fall. Each second the object falls

A. the same distance as in the second before.

B. a larger distance than in the second before.

C. with the same instantaneous speed.

D. with the same average speed.

Week 2 assignment

Complete the Energy and Circular Motion Exercises.

GCU style is not required, but solid academic writing is expected.

You are not required to submit this assignment to Turnitin.

PHY-102: Energy and Circular Motion Exercises

Complete the following exercises.

1. A rifle with a longer barrel can fire bullets with a larger velocity than a rifle with a shorter barrel.

a. Explain this using the impulse-momentum theorem.

b. Explain this using the work-energy theorem

2. Use physics terms to explain the benefits of crumple zones in modern cars.

3. When a gun is fired at the shooting range, the gun recoils (moves backward). Explain this using the law of conservation of momentum.

4. Rank the following in terms of increasing inertia:

A. A 10,000 kg train car at rest

B. A 100 kg person running at 5 m/s

C. A 1200 kg car going 15 m/s

D. A 15 kg meteor going at a speed of 1000 m/s

5. Rank the following in terms of increasing momentum:

A. A 10,000 kg train car at rest

B. A 100 kg person running at 5 m/s

C. A 1200 kg car going 15 m/s

D. A 15 kg meteor going at a speed of 1000 m/s

6. Rank the following in terms of increasing kinetic energy:

A. A 1200 kg car going 15 m/s

B. A 10,000 kg train car at rest

C. A 15 kg meteor going at a speed of 1000 m/s

D. A 100 kg person running at 5 m/s

7. Ben (55 kg) is standing on very slippery ice when Junior (25 kg) bumps into him. Junior was moving at a speed of 8 m/s before the collision and Ben and Junior embrace after the collision. Find the speed of Ben and Junior as they move across the ice after the collision. Give the answer in m/s. Describe the work you did to get the answer.

8. Identical marbles are released from the same height on each of the following four frictionless ramps.

Compare the speed of the marbles at the end of each ramp. Explain your reasoning.

9. A force of only 150 N can lift a 600 N sack of flour to a height of 0.50 m when using a lever as shown in the diagram below.

a. Find the work done on the sack of flour (in J).

b. Find the distance you must push with the 150 N force on the left side (in m).

c. Briefly explain the benefit of using a lever to lift a heavy object.

10. Rank the following in terms of increasing power.

A. Doing 100 J of work in 10 seconds.

B. Doing 100 J of work in 5 seconds.

C. Doing 200 J of work in 5 seconds.

D. Doing 400 J of work in 30 seconds.

11. A student lifts a 25 kg mass a vertical distance of 1.6 m in a time of 2.0 seconds.

a. Find the force needed to lift the mass (in N).

b. Find the work done by the student (in J).

c. Find the power exerted by the student (in W).

12. A satellite is put into an orbit at a distance from the center of the Earth equal to twice the distance from the center of the Earth to the surface. If the satellite had a weight at the surface of 4000 N, what is the force of gravity (weight) of the satellite when it is in its orbit? Give your answer in newtons, N.

13. Consider a satellite in a circular orbit around the Earth.

a. Why is it important to give a satellite a horizontal speed when placing it in orbit?

b. What will happen if the horizontal speed is too small?

c. What will happen if the horizontal speed is too large?

14. If you drop an object from a distance of 1 meter above the ground, where would it fall to the ground in the shortest time: Atop Mt. Everest or in New York?

15. Why do the astronauts aboard the space station appear to be weightless?

16. Why do the passengers on a high-flying airplane not appear weightless, similar to the astronauts on the space station?

17. A ranger needs to capture a monkey hanging on a tree branch. The ranger aims his dart gun directly at the monkey and fires the tranquilizer dart. However, the monkey lets go of the branch at exactly the same time as the ranger fires the dart. Will the monkey get hit or will it avoid the dart?

The remaining questions are multiple-choice questions:

18. Compared to its weight on Earth, a 5 kg object on the moon will weigh

A. the same amount.

B. less.

C. more.

19. Compared to its mass on Earth, a 5 kg object on the moon will have

A. the same mass.

B. less mass.

C. more mass.

20. The reason padded dashboards are used in cars is that they

A. look nice and feel good.

B. decrease the impulse in a collision.

C. increase the force of impact in a collision.

D. decrease the momentum of a collision.

E. increase the time of impact in a collision.

21. Suppose you are standing on a frozen lake where there is no friction between your feet and the ice. What can you do to get off the lake?

A. Bend over touching the ice in front of you and then bring you feet to your hands.

B. Walk very slowly on tiptoe.

C. Get on your hands and knees and crawl off the ice.

D. Throw something in the direction opposite to the way you want to go.

22. A car travels in a circle with constant speed. Which of the following is true?

A. The net force on the car is zero because the car is not accelerating.

B. The net force on the car is directed forward, in the direction of travel.

C. The net force on the car is directed inward, toward the center of the curve.

D. The net force on the car is directed outward, away from the center of the curve.

23. A job is done slowly, and an identical job is done quickly. Which of the following is true?

a. They require the same amount of force, but different amounts of work.

b. They require the same amount of work, but different amounts of power.

c. They require the same amounts of power, but different amounts of work.

d. They require the same amounts of work, but different amounts of energy.