# Physics equations/17-Physics of Hearing/Q:echoAndstring/More practice

## B

1 The temperature is -1.3 degrees Celsius, and you are standing 0.89 km from a cliff. What is the echo time?

 a) 5.389 x 100 seconds b) 5.819 x 100 seconds c) 6.283 x 100 seconds d) 6.784 x 100 seconds e) 7.326 x 100 seconds

2 While standing 0.89 km from a cliff, you measure the echo time to be 5.227 seconds. What is the temperature?

 a) 1.58 x 101Celsius b) 1.83 x 101Celsius c) 2.11 x 101Celsius d) 2.44 x 101Celsius e) 2.81 x 101Celsius

3 What is the speed of a transverse wave on a string if the string is 0.68 m long, clamped at both ends, and harmonic number 3 has a frequency of 756 Hz?

 a) 3.43 x 102 unit b) 4.15 x 102 unit c) 5.03 x 102 unit d) 6.09 x 102 unit e) 7.38 x 102 unit

## C

1 The temperature is -2.9 degrees Celsius, and you are standing 0.77 km from a cliff. What is the echo time?

 a) 3.714 x 100 seconds b) 4.011 x 100 seconds c) 4.331 x 100 seconds d) 4.676 x 100 seconds e) 5.049 x 100 seconds

2 While standing 0.77 km from a cliff, you measure the echo time to be 4.442 seconds. What is the temperature?

 a) 1.48 x 101Celsius b) 1.71 x 101Celsius c) 1.98 x 101Celsius d) 2.28 x 101Celsius e) 2.63 x 101Celsius

3 What is the speed of a transverse wave on a string if the string is 0.94 m long, clamped at both ends, and harmonic number 5 has a frequency of 715 Hz?

 a) 1.83 x 102 unit b) 2.22 x 102 unit c) 2.69 x 102 unit d) 3.26 x 102 unit e) 3.95 x 102 unit

## D

1 The temperature is -2.7 degrees Celsius, and you are standing 0.58 km from a cliff. What is the echo time?

 a) 2.797 x 100 seconds b) 3.02 x 100 seconds c) 3.261 x 100 seconds d) 3.521 x 100 seconds e) 3.802 x 100 seconds

2 While standing 0.58 km from a cliff, you measure the echo time to be 3.38 seconds. What is the temperature?

 a) 1.53 x 101Celsius b) 1.76 x 101Celsius c) 2.03 x 101Celsius d) 2.35 x 101Celsius e) 2.71 x 101Celsius

3 What is the speed of a transverse wave on a string if the string is 1.19 m long, clamped at both ends, and harmonic number 6 has a frequency of 834 Hz?

 a) 2.25 x 102 unit b) 2.73 x 102 unit c) 3.31 x 102 unit d) 4.01 x 102 unit e) 4.86 x 102 unit

## E

1 The temperature is -2.9 degrees Celsius, and you are standing 0.76 km from a cliff. What is the echo time?

 a) 3.395 x 100 seconds b) 3.666 x 100 seconds c) 3.959 x 100 seconds d) 4.274 x 100 seconds e) 4.615 x 100 seconds

2 While standing 0.76 km from a cliff, you measure the echo time to be 4.339 seconds. What is the temperature?

 a) 2.83 x 101Celsius b) 3.26 x 101Celsius c) 3.77 x 101Celsius d) 4.35 x 101Celsius e) 5.03 x 101Celsius

3 What is the speed of a transverse wave on a string if the string is 0.5 m long, clamped at both ends, and harmonic number 4 has a frequency of 316 Hz?

 a) 7.9 x 101 unit b) 9.57 x 101 unit c) 1.16 x 102 unit d) 1.4 x 102 unit e) 1.7 x 102 unit

## F

1 The temperature is -1.4 degrees Celsius, and you are standing 0.94 km from a cliff. What is the echo time?

 a) 4.883 x 100 seconds b) 5.272 x 100 seconds c) 5.693 x 100 seconds d) 6.147 x 100 seconds e) 6.637 x 100 seconds

2 While standing 0.94 km from a cliff, you measure the echo time to be 5.522 seconds. What is the temperature?

 a) 1.57 x 101Celsius b) 1.81 x 101Celsius c) 2.09 x 101Celsius d) 2.41 x 101Celsius e) 2.79 x 101Celsius

3 What is the speed of a transverse wave on a string if the string is 1.13 m long, clamped at both ends, and harmonic number 5 has a frequency of 409 Hz?

 a) 1.26 x 102 unit b) 1.53 x 102 unit c) 1.85 x 102 unit d) 2.24 x 102 unit e) 2.71 x 102 unit

## G

1 The temperature is -2.4 degrees Celsius, and you are standing 0.94 km from a cliff. What is the echo time?

 a) 4.53 x 100 seconds b) 4.892 x 100 seconds c) 5.282 x 100 seconds d) 5.703 x 100 seconds e) 6.158 x 100 seconds

2 While standing 0.94 km from a cliff, you measure the echo time to be 5.418 seconds. What is the temperature?

 a) 2.33 x 101Celsius b) 2.69 x 101Celsius c) 3.1 x 101Celsius d) 3.58 x 101Celsius e) 4.14 x 101Celsius

3 What is the speed of a transverse wave on a string if the string is 1.05 m long, clamped at both ends, and harmonic number 5 has a frequency of 110 Hz?

 a) 3.15 x 101 unit b) 3.81 x 101 unit c) 4.62 x 101 unit d) 5.6 x 101 unit e) 6.78 x 101 unit

## H

1 The temperature is -3 degrees Celsius, and you are standing 0.66 km from a cliff. What is the echo time?

 a) 2.949 x 100 seconds b) 3.184 x 100 seconds c) 3.438 x 100 seconds d) 3.713 x 100 seconds e) 4.009 x 100 seconds

2 While standing 0.66 km from a cliff, you measure the echo time to be 3.768 seconds. What is the temperature?

 a) 3.26 x 101Celsius b) 3.77 x 101Celsius c) 4.35 x 101Celsius d) 5.03 x 101Celsius e) 5.81 x 101Celsius

3 What is the speed of a transverse wave on a string if the string is 0.58 m long, clamped at both ends, and harmonic number 4 has a frequency of 543 Hz?

 a) 8.86 x 101 unit b) 1.07 x 102 unit c) 1.3 x 102 unit d) 1.57 x 102 unit e) 1.91 x 102 unit

## I

1 The temperature is -2.3 degrees Celsius, and you are standing 0.62 km from a cliff. What is the echo time?

 a) 3.226 x 100 seconds b) 3.483 x 100 seconds c) 3.761 x 100 seconds d) 4.061 x 100 seconds e) 4.385 x 100 seconds

2 While standing 0.62 km from a cliff, you measure the echo time to be 3.648 seconds. What is the temperature?

 a) 1.47 x 101Celsius b) 1.7 x 101Celsius c) 1.97 x 101Celsius d) 2.27 x 101Celsius e) 2.62 x 101Celsius

3 What is the speed of a transverse wave on a string if the string is 0.45 m long, clamped at both ends, and harmonic number 4 has a frequency of 996 Hz?

 a) 1.53 x 102 unit b) 1.85 x 102 unit c) 2.24 x 102 unit d) 2.72 x 102 unit e) 3.29 x 102 unit

## J

1 The temperature is -2.1 degrees Celsius, and you are standing 0.83 km from a cliff. What is the echo time?

 a) 5.033 x 100 seconds b) 5.435 x 100 seconds c) 5.868 x 100 seconds d) 6.336 x 100 seconds e) 6.842 x 100 seconds

2 While standing 0.83 km from a cliff, you measure the echo time to be 4.832 seconds. What is the temperature?

 a) 1.57 x 101Celsius b) 1.81 x 101Celsius c) 2.09 x 101Celsius d) 2.42 x 101Celsius e) 2.79 x 101Celsius

3 What is the speed of a transverse wave on a string if the string is 1.05 m long, clamped at both ends, and harmonic number 5 has a frequency of 153 Hz?

 a) 5.3 x 101 unit b) 6.43 x 101 unit c) 7.79 x 101 unit d) 9.43 x 101 unit e) 1.14 x 102 unit