A Jet Aircraft,in Level Flight at Constant Speed,is Observed Directly

question 5

Multiple Choice

A jet aircraft,in level flight at constant speed,is observed directly overhead.A sonic boom is heard later,at which time the line of sight to the aircraft forms a 56° angle with respect to the horizontal.The speed of sound is 325 m/s.What is the Mach number (the ratio of the speed of the jet to the speed of sound) for the aircraft?

• A) 1.2
• B) 1.8
• C) 1.9
• D) 2.1
• E) 2.2

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Definitions:

Operating Expenses

Expenses incurred during the regular operations of a business, excluding the cost of goods sold.

Cost of Goods Sold

The expenses directly linked to the manufacturing of the products a company sells, such as costs for materials and labor.

Work in Process Inventory

The expenses associated with goods that are still in the manufacturing stage, encompassing wages, raw materials, and indirect costs.

Cost of Goods Sold

The direct costs attributable to the production of the goods sold by a company, including the cost of the materials used in creating the good along with the direct labor costs used to produce the good.