Homework SourseA what is the amplitude of the wave a 2 mm b 4 mm c 8 mm d 1
A) what is the amplitude of the wave?
a) 2 mm
b) 4 mm
c) 8 mm
d). 12 mm
E) 16 mm
B) what is the wavelength of the wave?
a) 3 cm
b) 6 cm
c) 9 cm
d) 12 cm
e) 15 cm
C) what is the frequency of the wave?
a) 0.60 Hz
b) 0.90 Hz
c) 1.1 Hz
d) 1.3 Hz
e) 1.7 Hz
Problem 4 The displacement of a vibrating string versus position along the string is shown in the figure. The periodic waves have a speed of 10.0 cm/s. A and B are two points on the string. 2 x (cm) 0 in 2 Solution
A. amplitude is the gretaest vertical displacement, that is A = 4 mm
option (b) is correct.
B. wavelength is the distance between the two peaks,
that is lambda = 7.5 cm - 1.5 cm = 6 cm
hence, option (b) is correct.
C.
the frequency is,
f = v/lambda = 10 cm/s / 6 cm = 1.67 Hz = 1.7 Hz approximately
Hence, option e is correct.
