Sonar is a device that uses reflected sound waves to measure underwater depths. If a sonar signal has a wavelength of 59 m and the velocity of sound in water is 15,000 m/s, what is the frequency of the signal? A. 0.0039 Hz

B. 254 Hz

C. 885,000 Hz

the frequency of the signal is

b)254hz

1 a

2 b

3 b

4 d

5 d

6 d

explanation:

the simple machine has three main features. they are:

fulcrum is the center point or pivot point of the machine. effort is input force/ applied force. load is external force/ output.

the keisha 's machine labels are

x : load

y: fulcrum

z: lever