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Physics Quiz 39 (25 MCQs)

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1. It refers to the closeness of two or more measurements to each other
2. Who discovered the evolution of stars
3. The nuclear reaction in which a heavy nucleus splits into two nuclei of nearly equal mass is called
4. The rate at which velocity CHANGES is
5. Which of the following statements is false about electric field lines
6. The electrical force between charges is strongest when the charges are
7. Which of the following laws is accounted for when a closed calorimeter is used in an experiment to determine the amount of heat transferred?
8. When capacitors is arrange in series (3 capacitors), the equivalent capacitance C is
9. Why do scientists use models.
10. Which of these temperatures is likely when a container of water at 20$^ \circ$C is mixed with water at 28$^ \circ$C?
11. What is wave speed?
12. What is the most accurate and precise method to measure the thickness of a coin?
13. What does the letter 'I' stand for in Ohm's Law?
14. Persistence of vision is the principle behind?
15. A hair dryer draws 1 200 W, a curling iron draws 800 W, and an electric light fixture draws 500 W. If all three of these appliances are operating in parallel on a 120-V circuit, what is the total current drawn?
16. The SI unit consists of _____ fundamental units.
17. In series connection of capacitors, what is conserved physically?
18. An object undergoing simple harmonic motion has a period of 0.007 s. What is its frequency?
19. A wave signal passes a point with 5 complete oscillations in 2 seconds. What is the frequency of the wave?
20. It is the rate of doing work. That also is the rate at which energy is transferred.
21. The speed of sound in the atmosphere is most affected by variations in which of the following?
22. One reason why the sky appears blue is because
23. What is Canada's National Animal?
24. Which law states, "Signifies that good absorbers are good emitters" .
25. There are many factors that contribute to the overall crashworthiness of a vehicle. Which of the following is NOT a factor that you should consider when judging if a car has good crashworthiness?
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