A 2.0-m-long string vibrates at its second-harmonic frequency with a maximum amplitude of 2.9 cm. One end of the string is at x = 0 cm.
a) Find the oscillation amplitude at x = 10 cm.
b) Find the oscillation amplitude at x = 20 cm.
c) Find the oscillation amplitude at x = 30 cm.
d) Find the oscillation amplitude at x = 40 cm.
e) Find the oscillation amplitude at x = 50 cm.