1. If y = 0.04 sin (40x - 400t) (SI units), and if the mass density of the string on which the wave propagates is kg/m, then the transmitted power wave is _____ . Select the correct answer.
7.68 W
7.71 W
7.58 W
8.02 W
382 W 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

2. Ocean waves with a wavelength of 190 m are coming in at a rate of 10 per minute. What is their speed? Select the correct answer.
32 m/s
5.0 m/s
3.0 m/s
28 m/s
39 m/s 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

3. Bats can detect small objects such as insects that are of a size on the order of a wavelength. If bats emit a chirp at a frequency of 55 kHz and the speed of soundwaves in air is 330 m/s, what is the smallest size insect they can detect? Select the correct answer.
6.0 mm
4.9 mm
3.8 mm
2.7 mm
2.8 mm 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

4. A piano string of density 0. 0050 kg/m is under a tension of 1,450 N
A piano string of density kg/m is under a tension of 1,450 N. Find the velocity with which a wave travels on the string. Select the correct answer.
540 m/s
270 m/s
470 m/s
940 m/s
1,880 m/s 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

5. A 50-m long transmission cable is suspended between two towers
A 50-m long transmission cable is suspended between two towers. If the mass density is 2.02 kg/m and the tension in the cable is x 104 N, what is the speed of transverse waves on the cable? Select the correct answer.
157 m/s
61 m/s
314 m/s
200 m/s
1,420 m/s 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

6. A student attaches a length of nylon fishing line to a fence post
A student attaches a length of nylon fishing line to a fence post. She stretches it out and shakes the end of the rope in her hand back and forth to produce waves on the line. The most efficient way for her to increase the wavelength is to Select the correct answer.
increase the tension on the hose and shake the end more times per second
decrease the tension on the hose and shake the end more times per second
increase the tension on the hose and shake the end fewer times per second
decrease the tension on the hose and shake the end fewer times per second
keep the tension and frequency the same but increase the length of the hose 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

7. Transverse waves are traveling on a 1
Transverse waves are traveling on a 1.00-m long piano string at 600 m/s. If the points of zero vibration occur at one-half wavelength, (where the string is fastened at both ends), find the frequency of vibration. Select the correct answer.
300 Hz
1,500 Hz
600 Hz
900 Hz
150 Hz 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50