Final answer:
Waves can indeed superimpose even if their frequencies are different; the resulting wave pattern is the sum of the individual waves. Answer: A. True
Step-by-step explanation:
The statement that waves can superimpose if their frequencies are different is true. Wave superposition, or the superposition principle, states that when two or more waves overlap, the resulting wave is the sum of the individual waves. This phenomenon can occur regardless of whether the waves have the same or different frequencies.
Different frequencies will result in a more complex wave pattern due to the superposition, possibly forming a beat pattern if the frequencies are close enough. This type of interference can be observed in various wave types, including sound waves, light waves, and water waves. Therefore, the superposition of waves is not frequency-dependent but rather a fundamental principle of wave behavior.
A schedule is conflict serializable if it is conflict equivalent to some serial schedule. This means that the schedule does not result in any conflicts between transactions, meaning that there are no overlapping read and write operations on the same data item.
To determine if a schedule is conflict serializable, we can construct a precedence graph where each transaction is represented by a node, and there is a directed edge from transaction A to transaction B if A precedes B in the schedule and there is a conflict between them. If the graph is acyclic, then the schedule is conflict serializable.