A Speedboat Moving at 20

question 86

Multiple Choice

A speedboat moving at 20.6 m/s sounds a signal on its horn,producing a tone of 320 Hz.There is no wind,and the speed of sound in air is 329 m/s.The apparent frequency of the sound heard by an observer in another boat moving in the opposite direction and approaching the first at a speed of 15.4 m/s is

• A)282 Hz
• B)287 Hz
• C)316 Hz
• D)357 Hz
• E)369 Hz

Comprehend the demographic characteristics of minimum-wage workers in the USA.

Identify the types and causes of unemployment related to wage settings above the equilibrium.

Understand the legal and economic instruments, such as right-to-work laws and strikes, that influence the operation and power of unions.

Evaluate the arguments for and against the existence of unions and their effects on labor market efficiency and equity.