If y = 0.02 sin (30x - 400t) (SI units), the velocity of the wave ...

[magmichele12]

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.

[akemokai]

Answer to Question 1

B

Answer to Question 2

D

[magmichele12]

Excellent

[lindahyatt42]

TYSM