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Units & Measurement in Physics Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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Question 1 1. You are measuring the volume of a liquid that is 20.31 mL. What are your certain digits in this measurement?

Question 2 2. How many significant figures are in the number 0.220?

Question 3 3. Which measurement has higher uncertainty?

Question 4 4. How many significant figures should the product of 1.2 x 1.4592 contain?

Question 5 5. In the measurement 29.4 cm, what number(s) is the uncertain digit?

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Question 6 6. What would give you a more precise reading, a yard stick with feet as its smallest unit or a yard stick with inches as its smallest unit?

Question 7 7. The density of mercury is 13.6 g/mL. What is its density in lbs/L? (Hint: 1 lb = 0.454 kg)

Question 8 8. If you are driving at a speed of 55.0 miles per hour, then what is your speed in meters per second? (Hint: 1 mile = 1,600 meters.)

Question 9 9. Use dimensional analysis to convert 4 days into seconds.

Question 10 10. Which of the following is a conversion factor?

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Question 11 11. One mole of aluminum atoms has a mass of 27 grams. How many grams are in 9.0 moles of aluminum?

Question 12 12.

You measure the mass of a block five times and get the following values: 0.48 g, 0.51 g, 0.50 g, 0.49 g, 0.50 g

The true mass is known to be 0.60 g. What is the percent error?

Question 13 13.

You measure the mass of a block five times and get the following values: 0.48 g, 0.51 g, 0.50 g, 0.49 g, 0.50 g

The true mass is known to be 0.60 g. How would you characterize your measurements?

Question 14 14. A measure of how close your measurements are to a true or accepted value of the measured quantity is called:

Question 15 15.

You measure the mass of a block five times and get the following values: 0.45 g, 0.55 g, 0.40 g, 0.60 g, 0.50 g

The true mass is known to be 0.50 g. How would you characterize your measurements?

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Question 16 16. A measure of how closely repeated measurements agree with each other is:

Question 17 17. What is SI units shorthand for?

Question 18 18. In the SI units, what makes the base units special?

Question 19 19. What is the point of having units in the sciences?

Question 20 20. What do we call an SI unit that is created by combining base units using algebra?

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Question 21 21. Which of the following is an example of a unit?

Units & Measurement in Physics Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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