The Sound from a Single Source Can Reach Point O

question 54

Multiple Choice

The sound from a single source can reach point O by two different paths.One path is long and the second path is 21.0 m long.The sound destructively interferes at point O.What is the minimum frequency of the source if the speed of sound is 340 m/s?

• A) 340 Hz
• B) 6800 Hz
• C) 520 Hz
• D) 680 Hz
• E) 170 Hz

---

Definitions:

Control Activity Over Cash

Procedures and policies implemented by a company to manage and monitor cash transactions and balances to prevent fraud and errors.

Pre-Signed Blank Cheques

A risky financial practice that involves signing a cheque before the amount payable is entered, leaving it vulnerable to fraud or misuse.

Limited Access

A situation or condition where access or entry is restricted or controlled, often referring to restricted data or locations.

Segregation Of Duties

A risk management and internal control principle that divides responsibilities among different people to reduce the risk of error or fraud.