**SPH 3UWave Behvaviour AssignmentName**

1.What will the result be if a crest with an amplitude of 30 cm overlaps a trough with an amplitude of 5.0 cm?

a)crest with an amplitude of 35 cmd)trough with an amplitude of 25 cm

b)trough with an amplitude of 35 cme)crest with an amplitude of 6 cm

c)crest with an amplitude of 25 cm

2.If a vibrating point travels 60 mm during 3.0 cycles, what is the amplitude of the vibration?

a)0.05 mmb)5.0 mmc)15 mmd)20 mme)180 mm

3.A vibrating spring completes 25 cycles in 100s. What is the frequency of this vibration?

a)0.25 Hzb)4.0 Hzc)2.5 kHzd)75 Hze)125 Hz

4.A wave has a wavelength of 30.0 m and a frequency of 60.0 Hz. What is the speed of the wave?

a)0.500 m/sb)2.00 m/sc)30.0 m/sd)90.0 m/se)1.80 km/s

5.A wave with a wavelength of 30 cm reflects from a fixed end. How far from that end will the first anti-node be formed?

a)7.5 cmb)15 cmc)30 cmd)45 cme)60 cm

6.For the standing wave in the previous question, what is the distance between adjacent nodes?

a)7.5 cmb)15 cmc)30 cmd)45 cme)60 cm

7.For two connected pendulums to resonate, they must have the same

a)massb)amplitudec)densityd)temperaturee)length

8.Sketch what a longitudinal wave would look like and label the parts. (2 mks)

9.A mass attached to a spring is shown at three different positions.

a)Determine the amplitude of the vibration. (1 mk)

b)If it takes 27 s to travel 24 cm, what is the frequency? (2 mks)

10.a)Show what happens when a 2-D wave crosses the boundary between a less dense medium and a more dense medium. (2 mks)

b)What are the two (2) things that will happen to the wave when it passes from the less dense medium to the more dense medium? (2 mks)

c)What is this behaviour called? (1 mk)

11.Cont’d…

d)Give an example where this might happen with sound waves. (1 mk)

12.a) Sketch the pattern of a set of wavefronts diffracting around an obstacle like the one shown below. What forms behind the obstacle? (2 mks)

b)Describe how this can affect sound. (2 mks)

13.a) Draw a standing wave consisting of 5 loops across a distance of 10 m. (2 mks)

b)How long is one wavelength? (1 mk)

14.How must the amplitudes of two opposite pulses compare if they are to produce a nodal point?

(1 mk)

15.Show what happens when a pulse

a)reaches a wall (1 mk)result

b)meets an incoming pulse and they overlap (1 mk)

c)What is each wave behaviour called (write your answer on the lines provided)? (2 mks)

16.a) A vibrating 256 Hz tuning fork is brought near a small wine glass. Without actually making contact, the tuning fork makes the wine glass vibrate. Explain why this occurs. (2 mks)

b)What could eventually happen to the glass if the source of vibration continues? Explain why. (2 mks)

17.Other than sound waves, what other type(s) of wave will exhibit diffraction, reflection, refraction? Give an example of each. (4 mks)

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