Question

Because of barriers and obstructions, you can see only a tiny fraction of a standing wave on a string. You do not know, for instance, how long the string is. All you know is that the speed of waves on the string is 100 m/s and that the distance is 10 cm. Can you determine the frequency of the standing wave? 1. Sure, the frequency is 1000 Hz. 2. Sure, the frequency is 500 Hz.

Answer 1

(1) Sure, the frequency is 1000 Hz.

Step-by-step explanation:

Frequency = wave speed ÷ wave distance

wave speed = 100 m/s

wave distance = 10 cm = 10/100 = 0.1 m

Frequency = 100 ÷ 0.1 = 1000 Hz

Answer 2

500 Hz

Step-by-step explanation:

Given that,

speed of waves on the string is 100 m/s

distance is 10 cm

so given v is 100 m/s and L is 10 cm

frequency = speed (wave on string) / 2L

so the frequency is 100/2*10*10^-2m

= 1000/2

=500 Hz

so the answer is 500 Hz

frequency = speed (wave on string) / 2L

so given v is 100 m/s and L is 10 cm

so the frequency is 100/2*10*10^-2m

= 1000/2

=500 Hz

so the answer is 500 Hz