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Mechanical Wave

Total questions: 12

Worksheet time: 6mins

Name
Class
Date
1.

A transverse wave produced in a string is described by the expression,

 

𝑦 = 0.002 sin(30.0𝑥 − 2𝜋𝑓𝑡)

 

where 𝑦 and 𝑥 are in meter and 𝑡 in second. If the wave travels at a speed of 30.0 𝑚 𝑠−1, calculate its frequency.

a)

𝒇 = 𝟏𝟒𝟑. 𝟐 𝑯𝒛

b)

𝒇 = 𝟏𝟒𝟑. 𝟐 𝑯𝒛

c)

𝒇 = 𝟏𝟒𝟑. 𝟐 𝑯𝒛

d)

𝒇 = 𝟏𝟒𝟑. 𝟐 𝑯𝒛

2.

A wave traveling along a string is represented by the equation,

 

𝑦 = 0.003 sin(25.0𝑥 − 4𝜋𝑓𝑡)

 

where 𝑦 and 𝑥 are in meters and 𝑡 in seconds. If the wave speed is 25.0 𝑚 𝑠−1, determine its frequency.

a)

𝒇 = 𝟏𝟐. 𝟓 𝑯𝒛

b)

𝒇 = 𝟏𝟐. 𝟓 𝑯𝒛

c)

𝒇 = 𝟏𝟐. 𝟓 𝑯𝒛

d)

𝒇 = 𝟏𝟐. 𝟓 𝑯𝒛

3.

The displacement of a wave in a medium is given by the formula,

 

𝑦 = 0.004 sin(40.0𝑥 − 3𝜋𝑓𝑡)

 

where 𝑦 and 𝑥 are in meters and 𝑡 in seconds. If the wave travels at a speed of 40.0 𝑚 𝑠−1, find its frequency.

a)

𝒇 = 𝟐𝟎. 𝟎 𝑯𝒛

b)

𝒇 = 𝟐𝟎. 𝟎 𝑯𝒛

c)

𝒇 = 𝟐𝟎. 𝟎 𝑯𝒛

d)

𝒇 = 𝟐𝟎. 𝟎 𝑯𝒛

4.

A wave described by the equation,

 

𝑦 = 0.005 sin(50.0𝑥 − 5𝜋𝑓𝑡)

 

is traveling through a medium. If the speed of the wave is 50.0 𝑚 𝑠−1, calculate its frequency.

a)

𝒇 = 𝟐𝟓. 𝟎 𝑯𝒛

b)

𝒇 = 𝟐𝟓. 𝟎 𝑯𝒛

c)

𝒇 = 𝟐𝟓. 𝟎 𝑯𝒛

d)

𝒇 = 𝟐𝟓. 𝟎 𝑯𝒛

5.

The velocity of a stationary wave on a string is 300 𝑚 𝑠−1. If the frequency of the wave is 100 𝐻𝑧, what is the distance between two successive nodes?

a)

6.5 m

b)

11.5 m

c)

11.5 m

d)

1.5 m

6.

A wave traveling through a medium is described by the equation,

 

𝑦 = 0.006 sin(60.0𝑥 − 6𝜋𝑓𝑡)

 

If the speed of the wave is 60.0 𝑚 𝑠−1, calculate its frequency.

a)

𝒇 = 𝟔. 𝟎 𝑯𝒛

b)

𝒇 = 𝟔. 𝟎 𝑯𝒛

c)

𝒇 = 𝟔. 𝟎 𝑯𝒛

d)

𝒇 = 𝟔. 𝟎 𝑯𝒛

7.

A longitudinal wave in a medium is represented by the equation,

 

𝑦 = 0.005 sin(20.0𝑥 − 3𝜋𝑓𝑡)

 

where 𝑦 and 𝑥 are in meters and 𝑡 in seconds. If the wave travels at a speed of 20.0 𝑚 𝑠−1, determine its frequency.

a)

𝒇 = 𝟏𝟐. 𝟓 𝑯𝒛

b)

𝒇 = 𝟏𝟐. 𝟓 𝑯𝒛

c)

𝒇 = 𝟏𝟐. 𝟓 𝑯𝒛

d)

𝒇 = 𝟏𝟐. 𝟓 𝑯𝒛

8.

The speed of a wave on a string is 150 𝑚 𝑠−1. If the frequency of the wave is 75 𝐻𝑧, what is the wavelength of the wave?

a)

2.0 m

b)

1.0 m

c)

1.5 m

d)

3.0 m

9.

A sinusoidal wave is described by the equation

 

𝑦 = 25 sin(100𝜋𝑡 − 3.0𝑥)

 

Where 𝑦 indicates the displacement in 𝑐𝑚, 𝑡 is the time in seconds, and 𝑥 is the distance in meters. Calculate the velocity of the wave.

a)

83.3 m s-1

b)

75.0 m s-1

c)

100.0 m s-1

d)

50.0 m s-1

10.

A progressive wave is represented by equation

 

𝑦 = 20 sin(150𝜋𝑡 − 1.8𝑥)

 

Where 𝑦 is the displacement in 𝑐𝑚, 𝑡 is the time in second and 𝑥 is the distance in meter. Calculate the wave velocity.

a)

261.8 m s-1

b)

211.8 m s-1

c)

241.8 m s-1

d)

161.8 m s-1

11.

A wave traveling in a medium is described by the equation

 

𝑦 = 15 sin(120𝜋𝑡 − 2.5𝑥)

 

Where 𝑦 represents the displacement in 𝑐𝑚, 𝑡 is the time in seconds, and 𝑥 is the distance in meters. Determine the speed of the wave.

a)

75.0 m s-1

b)

60.0 m s-1

c)

90.0 m s-1

d)

45.0 m s-1

12.

A wave propagating through a medium can be represented by the equation

 

𝑦 = 20 sin(100𝜋𝑡 − 3𝑥)

 

In this equation, 𝑦 denotes the displacement in 𝑐𝑚, 𝑡 is the time in seconds, and 𝑥 is the distance in meters. Calculate the speed of the wave.

a)

60.0 m s-1

b)

80.0 m s-1

c)

100.0 m s-1

d)

40.0 m s-1