Explanation:
It is given that,
Frequency of diagnostic ultrasound, f = 3.82 MHz = 3820 Hz
The speed of the sound in air, v = 343 m/s
(a) We need to find the wavelength in air of such a sound wave. Let it is given by λ₁
i.e. 
(b) If the speed of sound in tissue is 1650 m/s .
Hence, this is the required solution.
Answer: 300 m/s
Explanation:
Given that:
length of water wave (λ) = 10 metres
Frequency of water wave (F) = 30 Hertz
Velocity of water wave (V) = ?
The velocity of a wave is the distance covered by the wave in one second. It is measured in metre per second, and represented by the symbol V. It is related to frequency and wave length by the formula: V = F λ
V = 30 Hertz x 10 metres
V = 300 m/s
Thus, the velocity of the water wave is 300 m/s
It is a screw. Hope this helps!
