Magnetic Field and Choices
Exam Name___________________________________
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) A floating leaf oscillates up and down two complete cycles in one second as a water wave passes by. The wave's wavelength is 10 meters. What is the wave's speed? A) 2 m/s B) 40 m/s C) 10 m/s D) 20 m/s E) more than 40 m/s 2) The Doppler effect is characteristic of A) light waves. B) sound waves. C) water waves. D) all of the above choices E) none of the above choices 3) During a single period, the distance traveled by a wave is A) one wavelength. B) two wavelengths. 1)
2)
3) C) one-half wavelength. 4)
4) A tuning fork of frequency 200 hertz will resonate if a sound wave incident on it has a frequency of A) 100 hertz. B) 400 hertz. C) either of 100 hertz or 400 hertz. D) neither 100 hertz or 400 hertz. 5) A skipper on a boat notices wave crests passing the anchor chain every 5 seconds. The skipper estimates the distance between crests is 15 m. What is the speed of the water waves? A) 5 m/s B) 3 m/s C) 15 m/s D) not enough information given 6) A dolphin perceives its environment by the sense of A) sound. B) sight. C) both sight and sound. D) neither sight or sound. 7) Compressions and rarefactions normally travel in A) opposite directions in a wave. B) the same direction in a wave. C) directions that are at right angles to the wave direction. 8) Sound travels faster in A) a vacuum. B) water. C) steel. D) air. E) Sound travels at about the same speed in all of the above media.
5)
6)
7)
8)
1
9) Two charges separated by one meter exert 1-N forces on each other. If the magnitude of each charge is doubled, the force on each charge is A) 1 N. B) 4 N. C) 2 N. D) 8 N. E) None of the above choices are correct. 10) Electric potential, measured in volts, is the ratio of electric energy to amount of electric A) charge. B) resistance. C) voltage. D) current. E) None of the above choices are correct.
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) A floating leaf oscillates up and down two complete cycles in one second as a water wave passes by. The wave's wavelength is 10 meters. What is the wave's speed? A) 2 m/s B) 40 m/s C) 10 m/s D) 20 m/s E) more than 40 m/s 2) The Doppler effect is characteristic of A) light waves. B) sound waves. C) water waves. D) all of the above choices E) none of the above choices 3) During a single period, the distance traveled by a wave is A) one wavelength. B) two wavelengths. 1)
2)
3) C) one-half wavelength. 4)
4) A tuning fork of frequency 200 hertz will resonate if a sound wave incident on it has a frequency of A) 100 hertz. B) 400 hertz. C) either of 100 hertz or 400 hertz. D) neither 100 hertz or 400 hertz. 5) A skipper on a boat notices wave crests passing the anchor chain every 5 seconds. The skipper estimates the distance between crests is 15 m. What is the speed of the water waves? A) 5 m/s B) 3 m/s C) 15 m/s D) not enough information given 6) A dolphin perceives its environment by the sense of A) sound. B) sight. C) both sight and sound. D) neither sight or sound. 7) Compressions and rarefactions normally travel in A) opposite directions in a wave. B) the same direction in a wave. C) directions that are at right angles to the wave direction. 8) Sound travels faster in A) a vacuum. B) water. C) steel. D) air. E) Sound travels at about the same speed in all of the above media.
5)
6)
7)
8)
1
9) Two charges separated by one meter exert 1-N forces on each other. If the magnitude of each charge is doubled, the force on each charge is A) 1 N. B) 4 N. C) 2 N. D) 8 N. E) None of the above choices are correct. 10) Electric potential, measured in volts, is the ratio of electric energy to amount of electric A) charge. B) resistance. C) voltage. D) current. E) None of the above choices are correct.