Question: A teacher stands well back from an outside doorway 0.88m wide, and blows a whistle of frequency 750Hz. Ignoring reflections, estimate at what angle(s) it

A teacher stands well back from an outside doorway 0.88m wide, and blows a whistle of frequency 750Hz. Ignoring reflections, estimate at what angle(s) it is not possible to hear the whistle clearly on the playground outside the doorway?

Step by Step Solution

★★★★★

3.56 Rating (160 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

The wavelength of the sound is v 343ms f 0457 m 750 Hz We fi... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

P-L-W-N (99).docx

120 KBs Word File

Students Have Also Explored These Related Light and Optics Questions!

A two-pass tube baffled single-pass shell; shell and tube heat exchanger is used as an oil cooler. Cooling water flows through the tubes at $20^{\circ} \mathrm{C}$ at a flow rate of \(4.082...

A teacher stands well back from an outside doorway 0.88 m wide, and blows a whistle of frequency 950 Hz. Ignoring reflections, estimate at what angle(s) it is not possible to hear the whistle clearly...

It is not possible to see very small objects, such as viruses, using an ordinary light microscope. An electron microscope can view such objects using an electron beam instead of a light beam....

This textbook states that it is not possible to review all contingencies. Elaborate on this statement.

Lesson 1 Unit/Lesson Title Lesson duration 60 minutes Stage 2 Year 4 Rationale This lesson develops and reinforces ideas of place value and the understanding of applying mental strategies to add and...

303 DEVELOPING A PROGRAM PHILOSOPHY AND RATIONALE STATEMENT Previous chapters have discussed the processes used in developing new courses and improving programs and fields of study. Each of these...

Using the attached lesson plan, develop a rubric for the assessment of the lesson plan with the following requirements: Discussion of Rubrics: rubrics should match the objectives, the description of...

\fSwitch: How to Change Things When Change Is Hard Listen in as co-author Chip Heath explains why some attempts to change are more successful than others. Listen to comprehensive interview with the...

DRUNKENNESS OR DISEASE? Dr. Mari Wang sat in her office long after the school day had ended, contemplating the most recent problem that had occurred in the Harrison City School District. Since...

Read the case study, and respond to the question that follows. (This is a real world example of an encounter between a student and a teacher.) (The paragraphs are numbered for your reference.) Adam...

It is very seldom that mere ordinary people like John and myself secure ancestral halls for the summer. A colonial mansion, a hereditary estate, I would say a haunted house, and reach the height of...

Hallergan Company produces car and truck batteries that it sells primarily to auto manufactures. Dorothys Hawkins, the companys controller, is preparing the financial statements for the year-end...

Johannes Brahms is a professional musician with the Toronto Symphony Orchestra. He made TFSA contributions of $5,000 each year in 2018, 2019 and 2020. His TFSA has a current balance of $17,500...

Reference What can an ethical hacker do for my business?Links to an external site. or an outside source and post the link. Discuss three approaches or techniques penetration testers might use when...

The current assets and current liabilities sections of the balance sheet of Agincourt Company appear as follows. The following errors in the corporation's accounting have been discovered: 1. January...

Presented below and on the next page is the balance sheet of Rasheed Brothers Corporation (000s omitted). InstructionsEvaluate the balance sheet presented. State briefly the proper treatment of any...

A catalytic reactor is used to produce formaldehyde from methanol in the reaction CH 3 OH HCHO + H 2 A single-pass conversion of 60.0% is achieved in the reactor. The methanol in the reactor product...

Stephen King, D.D.S., opened a dental practice on January 1, 2012. During the first month of operations, the following transactions occurred. 1. Performed services for patients who had dental plan...

Corbertt Pharmaceuticals manufactures an over-the-counter allergy medication. The company sells both large commercial containers of 1,000 capsules to health-care facilities and travel packs of 20...

What effect does a business-related news release have on the public?

You have been hired as a consultant for Brunch Corporation, manufacturers of fine zithers. The market for zithers is growing quickly. The company bought some land three years ago for $1.4 million in...

? What is the price of a $ 1 , 0 0 0 perpetual par bond with a coupon rate of 1 0 percent and a current yield of 8 percent

As a financial analyst for a bread and bakery company, what external event might significantly impact your financial projections? - the global growth of ride - sharing services - war between Russia...