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Practice Problems for the Physics Quiz on Thursday Smith 1. What are the 5 branches of physics? 2. What is the difference between measurement error and instrument error? Be able to give an example of each. For the following problems, show dimensional analysis and answer in correct significant figures. Please circle your final answer and give correct units. 3. How many milliliters in 25 liters? 4. How many meters per second in 65.0 miles per hour? (1 mile = 5280 feet, 3.28084 feet = 1 meter) 5. How many seconds in 18 years? 6. 7. 5 cm x 1.30 cm = 7. Explain the importance of significant figures in science. Give an example. How does significant figures differ from scientific notation? 8. Explain the difference between dependent variable, controlled variable and independent variable. 9. How many sig figs? a. 3.0050 b. 2400 c. 2400. d. 0.024 e. 0.0039 10. For the above image, give the most precise measurement possible. 11. Be able to explain hypothesis, observation, conclusion, experiment, theory