Font size
Worksheets8A TA 1920 Task 3 (vibration, Wave, and Sound)
Total questions: 11
Worksheet time: 35mins
Echo is the sound of reflection that is heard almost simultaneously with the original sound, so it is disturbing. Can be avoided by applying sound mufflers to the room, which is made of ..... ; ..... ; and .....
foam rubber
thick cardboard
hard material
cotton
Pay attention to the picture!
The spring is initially in position B, then pulled to C as far as 5 cm, then released so that the load moves up and down. In the movement of C-B-A takes 1.5 seconds. Determine the amplitude and vibration period of the spring!
A = 0,5 m and T = 1,5 s
A = 0,5 m and T = 3 s
A = 0,05 m cm and T = 1,5 s
A = 0,05 m cm and T = 3 s
The sound of reflections from a sound source is heard again after 2.5 seconds. If the speed of sound in the air is 300 m / s. Determine the distance of the sound source to the reflected wall!
37,5 m
375 m
75 m
750 m
Pay attention to the picture!
Determine the frequency of the wave!
0,8 Hz
1,25 Hz
8 Hz
12,5 Hz
A wave length of 0.75 m and the speed of the wave is 150 m/s. Determine the wave frequency!
0,005 Hz
0,05 Hz
20 Hz
200 Hz
When the weather is cloudy a child hears thunder 1.5s after being seen lightning. If the sound speed in the air is 320 m/s. Determine the distance of the lightning source from the child!
24 m
48 m
240 m
480 m
Pay attention to the picture!
Determine the amount of wave speed!
0,13 m/s
0,3 m/s
1,3 m/s
3 m/s
A pendulum is vibrated for 1 minute to produce 40 vibrations. The period is ..... and frequency is .....
T = 0,67 s
T = 1,5 s
F = 0,67 Hz
F = 1,5 Hz
Pay attention to the picture! Perhatikan gambar !
Determine the amount of wave speed!
0,1 m/s
1 m/s
10 m/s
100 m/s
Pay attention to the picture! If the distance from A-C is 30 cm and the time taken to swing from A-B is 1.5 s. Determine the wave speed ?
0,1 m/s
1 m/s
10 m/s
100 m/s
From the surface of the sea water, sound signals are sent to the sea floor. The signal is received again after 12 s. If the sound propagation fast in water is 1800m / s. Determine the depth of the sea!
1080 m
2160 m
10800 m
21600 m
