Waves Questions and Answers

If two waves both have an intensity 11 and the interfere destructively what resulting intensity would you expect 11 1 2 11 211

In a standing wave on a vibrating string a point that appears to remain stationary is a n Select one O a node b rarefaction C antinode d point of constructive interference

When a wave on a rope strikes a free boundary the wave is Select one O a reflected and inverted Ob not reflected O c reflected but not inverted d absorbed

ect one a C b D c B Before Interference d Diagram A N Diagram C Diagram B NT Ch diagram shows the shape of the medium when they are completely interfering Diagram D

25 meter chain is undergoing 150 cycles of motion in 3 seconds while in 12th conic Calculate the frequency period wavelength and wave speed of the chain

3 Increase and decrease the amplitude setting What happens to the actual drops of liquid AND the waves created as you increase and decrease the amplitude 4 Define Amplitude

11 What would be the mathematical relationship between wavelength and frequency Use abbreviations f for frequency and for wavelength 12 What are the units for frequency

7 Using and viewing the wave meter increase and decrease amplitude What happens to the waves on the meter 8 Using and viewing the wave meter increases and decreases frequency what happens to the waves on the meter

8 53 512 26 8 1610 30 700 7 A guitar string is set into vibration with a frequency of 512 Hz How many oscillations does it undergo each minute

Two waves meet and interfere constructively Which one of the following factors increases Select one O a amplitude O b wavelength c period O d frequency

An elastic rope is tied securely to a wall An upward displaced pulse is introduced into the rope The pulse travels through the rope reaches the boundary with the wall and reflects The reflected pulse will be Select one O a upright displaced upwards Ob inverted displaced downwards O c either inverted or upright depending upon its amplitude

18 An FM radio station broadcasts at 9 23 x 10 7 Hz Given that the radio waves travel at 3 00 x 10 8 m s what is the wavelength of these waves O a 0 308 m O b 2 77 m O c 3 25 m O d 6 50 m

1 What does the dropping liquid create 2 Describe what you see as the liquid continues to drop

7 How many nodes and antinodes are shown in the standing wave below p O a Three nodes and five antinodes O b Two nodes and three antinodes O c One fourth node and three antinodes Od Four nodes and three antinodes 8 Which of the following would be most likely to transmit sound the fastest a Air in the classroom Ob Steel in a bridge O c Water in the ocean

Two wave fronts off the coast of Sydney meet at the coast The height at the coast in m of the two wave forms an given by h 5 2 sin 4t and h 17 5 cos 4t where t is time in hours a Enter the exact value in Maple syntax of the maximum height of the combined wave form h h1 h in the box below b Enter the exact value of the initial rate of change of h in the box below c Enter the period of the periodic function h in Maple syntax in the box below Note In each part about enter the value of your answer only Do no enter unit The Maple syntax of entering is Pi not pi

What is the amplitude and period of the graph 4 08 4T 4 2 TT

29 An astronaut has landed on Planet N gravity on that planet She uses a sim oscillations 26 0 s What is the accele O 3 74 m s

Doubling only the amplitude of a vibrating mass on a spring system produces what effect on the system frequency increases the frequency by a factor of 2 increases the frequency by a factor of 3 O produces no change increases the frequency by a factor of 4

The drawing shows a frictionless incline and pulley The two blocks are connected by a wire mass per unit length 0 0226 kg m and remain stationary A transverse wave on the wire has a speed of 71 1 m s Neglecting the weight of the wire relative to the tension in the wire find the masses a m and b m of the blocks 30 0 my

0 1 The image above represents a standing wave a What harmonic does this represent 4th harmonic b What is the wavelength of the wave if the distance for the image is 3 00m V f

velength kHz 103 sec Submit Answer Retry E

EXAMPLE 08 Music System Sound Waves EXAMPLE Television Visible Light longitudinal WAVES SOURCE AAVIRT 1 pt each Wavelenth Expansion Frough tranverse crest NA A Allistud rough wavelength 1 6 7m Frequency ofware F KO WAVES wavelength DIRECTION A DIRECTION 2 A wave has a speed of 8 9 m s and has a wavelength of 6 7m What is the frequency of the wave 2 pts show your work Speed C 8 9m s F 2 1 33 H 8 9 6 7 C 1 F A symphony tunes to an oboe playing a note at 440Hz If the speed of sound is 340 29ms what is the wavelength

Waves A B and C all travel 12 0 meters in 2 0 seconds through the medium shown elow 10 m Determine the speed frequency period wavelength and amplitude of Wave A speed frequency period wavelength amplitude Speed Frequency Period Wavelength Choose Choose Choose Choose

For a standing wave on a string that is fixed at both ends As the frequency of the oscillator is increased the wavelength of the standing wave pattern Select the number of nodes Select Select increases decreases remains constant and the number of antinodes Assume that the speed of the waves on the string ncy is increased

A particular wave on a string travels to the left with an amplitude of 3 7 m a period of 9 s and a wavelength of 5 2 m The y coordinate of the wave is 0 25m at t 0 and x 0 Determine the speed of the wave Enter a numeric value to 2 decimal places that represents a quantity in units of m s

igure shows the displacement y of a wave at a given position as a function of time and the displacement of the same wave at a given time as a function of position Which of the following is are correct Choose all correct answers y cm 1 y cm 1 2 3 A 2 3 4 5 The wavelength is 2 meters The period is 2 seconds The frequency is 4 hertz The frequency is 0 25 hertz 4 None of these is correct Amo 7 8 9 t s 6 6 7 8 9 x m

1 A wave is travelin of 34 Hz What is the

The figure shows the displacement y of a wave at a given position as a function of time and the displacement of the same wave at a given time as a function of position Which of the following is are correct Choose all correct answers The wavelength is 2 meters The period is 2 seconds The frequency is 4 hertz The frequency is 0 25 hertz None of these is correct

The FM radio band 111 most places goes from frequencies of about 85 MHz to 111 MHz How long is the wavelength of the radiation at the beginning of the range Answer in units of m Answer in units of m part 2 of 2 How long is the wavelength of the radiation at the end of the range You

A wave has a speed of 8 9 m s and has a wavelength of 6 7m What is the frequency of the wave 2 pts show your work

1 Describe these five parts of a wave crest wavelength valley node antinode 10 points

2 Explain what happens to the frequency and wavelength when a b a sound source is approaching a stationary observer 5 points a sound source is receding from a stationary observer 5 points

The two pulses shown above are traveling in opposite directions along the same slinky When they meet which behavior is illustrated O diffraction destructive interference constructive interference O Doppler effect reflection

Before Reflection barrier wave direction changes speed stays the same What is TRUE about the reflected wave B in the picture above Choose all that apply wavelength changes speed changes After Reflection barrier frequency stays the same wavelength stays the same frequency changes wave direction stays the same

Why don't electromagnetic waves need particles to propagate?

A 8 kg mass vibrates according to the equation x = 0.57cos5.9t where x is in meters and t in seconds. Calculate the maximum acceleration of the wave in m/s². Round your answer to 2 decimal places.

A block-spring system oscillates with an amplitude of 2.1 cm. If the spring constant is 272 N/m and the mass of the block is 0.51 kg, determine the maximum speed in m/s of the block. Round your answer to 2 decimal places.

A cord of mass 0.63 kg is stretched between two supports 31.5 meters apart. If the tension in the cord is 130 N. What is the wave speed in m/s?

1. A large anchor is being lifted into a boat with metal sides. As the anchor leaves the water it hits the side of the boat, making loud sounds (a longitudinal wave) and making transverse waves on the surface of the water. a. Draw and explain a model of the sound wave showing how the medium moves and how the energy of the wave moves. b. Draw and explain a model of the water waves showing how the medium moves and how the energy of the wave moves.

Suppose your slinky was stretched to 4.5 m. You complete Scenario 3 with a frequency of 0.82 Hz. What is the wave speed in m/s? Remember to find your wavelength first! SLINKY LENGTH divided by NUMBER OF FULL WAVES SHOWING Round your answer to the nearest 0.1 (tenths place). Do not add units.

A string fixed at one end and free at the other end is resonating in its third harmonic. If the displacement equation is y(x, t) = 0.08 sin(6.28x) cos(512t). What is the length of the string (x, y are in m) ? 0.5 m 0.75 m 1.25 m 1m

Currently, CD players use a laser diode producing light with a wavelength of 780 nm. The index of refraction of the polycarbonate plastic layer is 1.55. If blue laser light with a wavelength of 475 nm were to be used, by what amount would the depth of the pits in the CD surface need to be changed? [A=3]

A 6 kg mass vibrates according to the equation x = 0.62cos7.8t where x is in meters and t in seconds. Calculate the maximum acceleration of the wave in m/s². Round your answer to 2 decimal places.

The equation of a transverse wave in a cord is given by: y (x, t) = (2.0cm) sin {2π/ (0.040 s) + 2πx/ (0.50 m) } Amplitude-Blank 1 cm Wavelength=Blank 2 m Blank 1 ________________ Blank 2 ________________

A 0.43-kg mass at the end of a spring vibrates 3.1 times per second with an amplitude of 0.17 meters. Determine the velocity in m/s when it passes the equilibrium point. Round your answer to 2 decimal places.

A periodic and recurrent disturbance in a lake produces waves that radiate outward from the source, resulting in circular wave patterns. The distance between successive wave crests __ is meter if the source frequency is 5 Hz and the wave speed is 6m/s. Round your answer to 2 decimal places.

4.1 sinusoidal waves with a frequency of 59 Hz were created on a string with a length of 1.49 m and a mass of 496 g. Determine the rope's wave tension force based on these values. Round your answer to 2 decimal places.

Because of the waves on the sea, a fisherman observes his boat going up and down on a regular basis. The boat travels 4.31 meters in 2.74 seconds from its highest point to its lowest position. The fisherman notices that the wave crests are 7.9 meters apart. What is the frequency? Round your answer to 3 decimal places.

A 1.2 kg mass vibrates according to the equation x = 0.74cos7.9t where x is in meters and t in seconds. Calculate the frequency in Hz. Round your answer to 2 decimal places.

A perfect spring whose spring constant is 180 newtons per meter is attached to a 3.2-kilogram cart that slides on a frictionless horizontal surface, as shown. The cart is moved 40 centimeters from its equilibrium position and released. Find the speed of the cart when it passes its equilibrium position.