A vibrating tuning fork attached to a sound
box and a plucked guitar string attached to
a guitar sound box produce louder sounds
than instruments without the sound boxes
attached. What process produces this
louder sound?
F frictional absorption
G frequency shifting
H forced resonance
J Doppler effect

30 points - when can a theory be modified if a new type of technology allows for new observations that raise new questions? a. immediately, while the questions about the theory are being asked b. after new hypotheses related to the theory are tested in experiments c. only after the new observations disprove all parts of the theory d. while scientists begin to think about how the theory could improve