Final answer:
The frequency of the wave is found by dividing the angular frequency of 6280 radians per second by 2π, resulting in approximately 1000 Hz. Therefore, the correct answer is A. 1000 Hz.
Step-by-step explanation:
The frequency of the wave can be determined by looking at the angular frequency part of the wave equation, which is the term with 't' in the argument of the cosine function. In the given wave equation y(x,t) = 5 cos(0.183x + 6280t) cm, the angular frequency is represented by the coefficient of t, which is 6280 radians per second.
To find the frequency in Hz, we need to divide the angular frequency by 2π (because 2π radians is equivalent to one complete cycle). Thus, the frequency f is calculated as the angular frequency divided by 2π:
f = 6280 / 2π Hz ≈ 1000 Hz
Therefore, the correct answer is A. 1000 Hz.