Author Question: If y = 0.02 sin (30x - 400t) (SI units), the velocity of the wave is a. 3/40 m/s b. 40/3 m/s c. ... (Read 28 times)

magmichele12 · **on:** Jul 28, 2018

If y = 0.02 sin (30x - 400t) (SI units), the velocity of the wave is
a. 3/40 m/s
b. 40/3 m/s
c. 60p/400 m/s
d. 400/60p m/s
e. 400 m/s

Question 2

The fundamental frequency of a above middle C on the piano is 440 Hz. This is the tenor high A, but a convenient note in the mid-range of women's voices. When we calculate the wavelength, we find that it is
a. much shorter than the length of either a man's or woman's lips.
b. shorter than the length of a man's lips, but about the length of a woman's lips.
c. longer than a woman's lips, but about the length of a man's lips.
d. much longer than the length of either a man's or a woman's lips.
e. about the same length as either a man's or woman's lips.