PHYS 204 Week 7 iLab 11 / DeVry

PHYS 204 Week 7 iLab 11 / DeVry

 

 

Complete course guide available here – http://class-tutor.com/doc/phys-204/phys-204-week-7-ilab-11-devry/

 

HOMEWORK Description

PHYS 204 Week 7 iLab 11

Prediction

What kind of image will you see through a convex lens? What factors might affect the size of the image?

What happens to the image if half of the lens is covered?

Explore

  1. Write a description of what happens to the image size when you change the position of the lens.
  2. Describe whether the image is upright or inverted.
  3. What happens to the image if half of the lens is covered with an opaque object?

Analysis

  1. The graph shows Inverse Image Distance (vertical axis) versus Object Distance (horizontal axis). The graph also shows a curve fit for the data. Write a description of the graph.
  2. Paste your graph here.
  3. What is the slope and y-intercept from the linear fit to your data?
  4. From the line fit, what is the focal length of the double convex lens?

Questions

  1. What value does the image distance approach as the object distance becomes larger?
  2. What value does the object distance approach as the image distance becomes larger?
  3. What is the relationship between image distance and object distance (directly related or inversely related)? Give evidence supporting your answer.
  4. Where would you place the object to obtain an image as far away from the lens as possible?
  5. Where would you place the object to obtain an image located at the focal length of the lens (100 mm)?
  6. Using your answer from above and your experiences in this activity, explain why fixed lens cameras require that the subject of the photo be a minimum distance from the lens.

 

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PHYS 204 Week 7 iLab 10 / DeVry

PHYS 204 Week 7 iLab 10 / DeVry

 

 

Complete course guide available here – http://class-tutor.com/doc/phys-204/phys-204-week-7-ilab-10-devry/

 

HOMEWORK Description

PHYS 204 Week 7 iLab 10

  1. How does the light intensity of a point source depend on distance?
  2. Paste a copy of your intensity-distance graph here.
  3. Record the results from the various fits.

Questions

  1. Which choice from the Fit menu was the best fit for your data?
  2. How does the light intensity depend on distance?
  3. Do your results agree with your prediction from the theory?
  4. List some reasons that your results may not match the relationship you predicted.

 

PHYS 204 Week 6 iLab 8 / DeVry

PHYS 204 Week 6 iLab 8 / DeVry

 

 

Complete course guide available here – http://class-tutor.com/doc/phys-204/phys-204-week-6-ilab-8-devry/

 

HOMEWORK Description

PHYS 204 Week 6 iLab 8

  1. How long does it take for a thermometer to reach the same temperature as that of its surroundings?
  2. If I want my coffee to be as warm as possible, should I add the milk immediately upon pouring the cup or wait until I am ready to drink it?
  3. Paste a copy of your final temperature–time graph for the cooling thermometer here.
  4. What are the parameters of the natural exponent fit for the thermometer cooled in air?
  5. From the exponential fit, what is the time constant of the thermometer cooled in air?
  6. What are the parameters of the natural exponent fit for the thermometer cooled in water?
  7. From the exponential fit, what is the time constant of the thermometer cooled in water?
  8. Paste a copy of your final temperature–time graph for Part 2 here.
  9. What are the final temperatures for the two runs in Part 2?

Questions

  1. How long should I wait to be sure that the thermometer temperature is the same as the room temperature in air?
  2. Would I have to wait as long if I placed the hot thermometer in room temperature water? How long would it be?
  3. What should you conclude about adding milk to your coffee based on the results of Part 2?

 

PHYS 204 Week 5 iLab 7 / DeVry

PHYS 204 Week 5 iLab 7 / DeVry

 

 

Complete course guide available here – http://class-tutor.com/doc/phys-204/phys-204-week-5-ilab-7-devry/

 

HOMEWORK Description

PHYS 204 Week 5 iLab 7

Part 1 Free Fall

  1. Paste your position-time graph below.
  2. Paste your velocity-time graph below.
  3. Do a straight-line fit on each of the straight lines of the sawtooth velocity-time graph. Record each slope in the table below, and then average them to find your value for the acceleration due to gravity.
  4. How does your value forg (slope of velocity versus time) compare to the accepted value of the acceleration of a free-falling object (g = 9.8 m/s2)? Calculate a percent difference between your measurement and the standard value of g.

5.What factors do you think may cause the experimental value to be different from the accepted value?

Part 2 Conservation of Energy

Prediction

1.How does the decrease in gravitational potential energy of a falling ball compare to its increase in kinetic energy?

2.What happens to the total of the gravitational potential energy plus the kinetic energy as a ball falls?

Questions

1.What happens to the gravitational potential energy (Energy #1) as the ball falls?

2.What happens to the kinetic energy (Energy #2) as the ball falls?

3.What does the “Total Energy–Time” graph tell you about the total energy of the ball as it falls?

4.What is one reason that some of the energy is lost as the ball falls?

 

PHYS 204 Week 5 iLab 6 / DeVry

PHYS 204 Week 5 iLab 6 / DeVry

 

 

Complete course guide available here – http://class-tutor.com/doc/phys-204/phys-204-week-5-ilab-6-devry/

 

HOMEWORK Description

PHYS 204 Week 5 iLab 6

  1. 1 point) Paste the Vx-time plot from phys204_lab6_inelastic1.trk here.
  2. (4 points) Record the measured initial and final average velocities of the red cart and the initial and final momenta in the table below.
  3. (2 points) Compute the percent difference between the initial momentum and the final momentum and record it below.
  4. (1 point) Paste the Vx-time plot from phys204_lab6_inelastic2.trk here.
  5. (4 points) Record the measured initial and final average velocities of the red cart and the initial and final momenta in the table below.
  6. (2 points) Compute the percent difference between the initial momentum and the final momentum and record it below.Show your work.
  7. (1 point) Paste the Vx-time plot from phys204_lab6_elastic.trk here.
  8. (4 points) Complete the table below.
  9. (2 points) Compute the percent difference between the calculated and measured final velocities for the blue cart and record it below.Show your work.
  10. (4 points) Was the measured final velocity greater than or less than the calculated final velocity in the elastic collision? Explain why.