A 1.1-kg uniform bar of metal is 0.40 m long and has a diameter of 2.0 cm. When someone bangs one end of this bar, a 1.5 MHz shock wave is travels along the length of the bar and reaches the
Other end in 0.12 ms. What is the wavelength of the shock wave in the metal?
A) 2.6 mm
B) 2.2 mm
C) 3.4 mm
D) 3.0 mm
E) 3.8 mm

Question

Quizplus · Accepted Answer

The speed of the shock wave is calculated by dividing the length of the bar (0.40 m) by the time it takes to travel (0.12 ms = 0.00012 s), giving a speed of 3333.33 m/s. The wavelength is then found by dividing the speed by the frequency (1.5 MHz = 1,500,000 Hz), resulting in a wavelength of approximately 2.2 mm.

A 11-Kg Uniform Bar of Metal Is 0