Exam 11: Waves

A longitudinal wave travels on a slinky or any long spring. The wave is represented by the equation x(x, t) = 2.1 cm cos(2000 rad/s t − 40 m⁻¹ x). What is the direction of propagation of the wave?

The frequency of a periodic wave is 340 Hz. The period of the vibration motion of the wave is

When light traveling in air passes into a sheet of glass, it is observed to change in wavelength to 58% of its wavelength in air. The speed of light in air is 3.0 × 10⁸ m/s. What is the speed of light in the glass?

A transverse periodic wave is represented by the equation y(x, t) = 2.50 cm cos(2,500 rad/s t − 15.0 m⁻¹ x). What is the velocity of the wave?

A string on a guitar is stretched between two points 35.0 cm apart with a tension of 65.0 N. The mass/length of the string is 0.00400 kg/m. The velocity of wave propagation on the string is

A string on a guitar is stretched between two points 35.0 cm apart with a tension of 65.0 N. The mass/length of the string is 0.00400 kg/m. The frequency of the mode of vibration with the lowest frequency is