Final answer:
The statements about wave amplitude, types of interference, voting choices, and wave superposition are true, while those about position vs time graphs and infinite frequency at the speed of sound are false.
Step-by-step explanation:
Several statements were presented regarding waves and their behavior, which are integral to understanding wave phenomena in physics:
Amplitude of waves: The statement that the amplitude of one wave is affected by the amplitude of another wave only when they are precisely aligned is True. This is when constructive or destructive interference occurs, depending on the phase relationship of the waves.
Position vs time graph: It is False that the position vs time graph of an object that is speeding up is always a straight line. The graph is a curve, reflecting acceleration.
Majority rule in choices: It is True that majority rule can fail to produce a single preferred outcome when there are more than two choices due to the occurrence of a voting cycle.
Superposition of waves: Waves can superimpose if their frequencies are different is True. This phenomenon is known as superposition and can result in complex wave patterns.
Frequency at the speed of sound: The statement that the observed frequency becomes infinite when the source is moving at the speed of sound is False. The frequency would increase but not become infinite.