question form

Your 'question form' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.

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That is correct.

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It's important to do text problems.

Your textbook includes exercises, problems and challenge problems. The University Physics course is taught at the level of the Problems.

Most of the Exercises in your text should be accessible to you, based on the ideas you develop by mastering the Introductory Problem Sets, the qa's and the 'seed' problems, and doing the labs. You aren't required to do them, but I would suggest doing, say, all the exercises whose numbers are multiples of 5, provided they can be done based on the information you've seen. Even if you don't work them all through, you should definitely read a selection of the exercises to give you a broader perspective on how the physics is applied.

An alternative is the optional Openstax text (see the Course Materials menu item), from which I have selected a number of exercises for your course.

I'm always glad to answer questions related to any exercises or assigned problems.

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If you have a graph of force vs. length for a rubber band, then if you know the length you can use the graph to find the force.

You calibrated rubber bands in the Rubber Band Calibration experiment (actually a quick look at your access page indicates that you haven't yet done that experiment. You're going to need to do it anyway so be sure to complete it before taking Test 1. That will be very helpful in understanding this type of problem).

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If you close a door, which is constrained to rotate on its hinges, it's the torque you exert and not the force that causes it to rotate and close. It's the moment of inertia that resists the net torque, in the same way that mass resists the action of the net force.

You can try this. If you push on a door at the moving edge it will close without requiring a lot of force. If you want to close the door as quickly by pushing near the hinged edge you'll need to exert a lot more force.

Torque is the product of force and moment arm. To find the angular acceleration of an object you divide the net torque by the moment of inertia, analogous to dividing the net force acting on an object by its mass.

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By doing the assignments you should learn the material well enough to excel on the tests.

If you check the homepage you'll find sample tests in qa format. It's a good idea to submit them.

You can also investigate the types of problems that appear on the tests. Just go to the Testing link and locate the tests. There's a new one every 5 minutes. You're welcome to submit questions about any problem you're unsure of, using the Submit Question Form.

Those distance students who are doing the work aren't having any trouble preparing for the tests. I've just graded Test 1 from a couple of distance students who both made 100's on Test 1, as well as on the earlier Major Quiz.

You should also look at the resources on the Assignments Page, e.g., the 'synopsis' and 'memorize this' links, as well as the Linked Outline.

I expect that you'll do very well on the tests, and if you don't you'll have the option of taking another version of any test you want to improve.

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Check my notes. I'm always glad to answer additional questions.

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