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This item is copyrighted, and was created by those from “theeseller555.” The only authorized seller of this item is theeseller555. Practice Physics Problems: 1. A student is provided with three 2-ohm resistors. How many different total resistances can be produced if all three of the resistors are used in a circuit? a. 3 b. 4 c. 5 d. 6 2. What are the minimum and maximum resistances produced by the circuits in question 1? a. 0.67 ohms and 3 ohms b. 1 ohm and 6 ohms c. 1.33 ohms and 6 ohms d. 0.67 ohms and 6 ohms 3. A student connects three 2-microfarad capacitors in parallel. What is the total capacitance? a. 0.67 microfarads b. 6 microfarads c. 1.5 microfarads d. 3 microfarads 4. The capacitors in parallel in question 3 are connected to a 6-V dc voltage supply. What is the current in the circuit after the transients have disappeared? a. 0 A b. 1 A c. 1,000,000 A d. 2 A 5. If the capacitors in question 3 are connected to an ac voltage source of 4 V rms , oscillating at a frequency of 1 MHz, what is the root mean square current in the circuit?
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a. 48 π A b. 24 π A c. 40 π A d. 3 π A 6. A 50 cm long hollow glass cylinder open at both ends is held in the air. A device that produces pure tones is placed adjacent to one end. The frequency of the sound is initially set very low then increased gradually. At a frequency of 320 Hz, the tube resonates. What is the speed of sound in air during this experiment? a. 320 m/s b. 640 m/s c. 330 m/s d. 160 m/s 7. A 50 cm long hollow glass cylinder open at both ends is held in the air. A device that produces pure tones is placed adjacent to one end. The frequency of the sound is initially set very low then increased gradually. At a frequency of 320 Hz, the tube resonates. The frequency is increased until resonance occurs again. What is this higher resonant frequency? a. 320 Hz b. 960 Hz c. 640 Hz d. 1,280 Hz 8. A 50 cm long hollow glass cylinder closed at one end is held in the air. A device that produces pure tones is placed adjacent to the open end. The frequency of the sound is initially set very low then increased gradually. What are the three lowest resonant frequencies? (Assume the speed of sound is 340 m/s.) a. 150 Hz, 510 Hz, 850 Hz b. 170 Hz, 610 Hz, 850 Hz c. 170 Hz, 510 Hz, 870 Hz d. 170 Hz, 510 Hz, 850 Hz 9. The setup in question 7 is placed in a chamber filled with helium. What happens to the respective resonant frequencies? a. They remain the same. b. They increase. c. They decrease. d. Some increase while others decrease. 10. The setup in question 7 is now subjected to a decrease in temperature of 20 degrees Celsius. What happens to the respective resonant frequencies?
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a. They remain the same. b. They increase. c. They decrease.
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physics3 - This item is copyrighted, and was created by...

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