A Steel Piano String Is Attached,under Tension,at Each End to Secure

question 8

Multiple Choice

A steel piano string is attached,under tension,at each end to secure posts.When gently struck,a faint note can be detected coming from the string.The string is then cooled by blowing cold air over it and then is struck again.How does the note now detected compare to the previous one.

• A)It is the same since the posts don't move.
• B)It is at a higher frequency than the original one.
• C)It is at a lower frequency than the original one.
• D)More than one answer is correct.

---

Definitions:

Quasi-experimental Methods

Research designs that attempt to establish causal relationships without the full control or randomization present in true experiments.

Introspection

is the examination of one's own conscious thoughts and feelings, often used in psychology to explore the inner self.

Proof

Evidence or argument establishing a fact or the truth of a statement in various contexts, such as mathematical, legal, or logical verification.

Scientific Method

The scientific method is a systematic, empirical approach to investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge, based on observable, measurable evidence.