Is this correct? Physics Question?

A one-dimensional longitudinal wave traveling along a string is described by the following equation: where all distances are measured in meters and time in seconds. Which of the following statements is incorrect? a. The wave travels in the −z direction. b. The wavelength of the wave is 2m. c. The frequency of... show more A one-dimensional longitudinal wave traveling along a string is described by the following equation: where all distances are measured in meters and time in seconds. Which of the following statements is incorrect?

a. The wave travels in the −z direction.
b. The wavelength of the wave is 2m.
c. The frequency of the wave is 10 Hz.
d. The amplitude of the wave is 0.2 m.
e. The wave has a speed of 10 m/s.

I got 5Hz for the frequency so would the answer be c?
1 answer 1