Per2_exercise

# Per2_exercise - Answers to Period 2 Exercises E.1 Which of the following does NOT make use of wave motion a A bowling ball strikes a bowling pin b

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Answers to Period 2 Exercises E.1 Which of the following does NOT make use of wave motion? a) A bowling ball strikes a bowling pin. b) A radio plays music transmitted from a radio station. c) A microwave oven heats a slice of pizza. d) Jane is reading by the light of an incandescent lamp. e) A tennis ball floating on the river bobs up and down as a boat passes by. E.1 = a

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E.2 Each of the following travels, in a vacuum, at the speed of light except a) radio waves b) sound waves c) X-rays d) infrared rays e) All of the above travel at the speed of light. All forms of electromagnetic radiation travel at 3 x 10 8 meters/second in a vacuum. Sound waves travel only about one-millionth as fast as radiation waves. E.2 = b
E.3 Estimate the wavelength of a 1500 Hz sound wave. What would be the wavelength of an electromagnetic wave of the same frequency? a) 0.23 m; 5 x 10 -6 m b) 0.23 m; 2 x 10 5 m c) 4.4 m; 5 x 10 -6 m d) 4.4 m; 2 x 10 5 m e) 8.8 m; 6.2 x 10 5 m s = fL, so L = s/f approximate speed of a sound wave =

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## This note was uploaded on 06/11/2011 for the course PHYSICS 104 taught by Professor Staff during the Winter '11 term at Ohio State.

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Per2_exercise - Answers to Period 2 Exercises E.1 Which of the following does NOT make use of wave motion a A bowling ball strikes a bowling pin b

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