« previous next »

Author Question: A train is traveling away from you at 120 km/h. It blows its whistle, and you hear a tone of 0.400 ... (Read 83 times)

Melani1276

  • Hero Member
  • *****
  • Posts: 516
on: Jul 29, 2018
A train is traveling away from you at 120 km/h. It blows its whistle, and you hear a tone of 0.400 kHz. Take the speed of sound to be 340 m/s. What frequency does the whistle actually produce?
 
  A) 444 Hz
  B) 439 Hz
  C) 364 Hz
  D) 361 Hz

Question 2

A conductor is placed in a steady external electric field. Which of the following statements are correct for this situation? (There could be more than one correct choice.)
 
  A) The electric field is zero inside the conductor.
  B) All the free electrons go to the surface of the conductor.
  C) The surface of the conductor is neutral.
  D) The electric field just outside the surface of the conductor is perpendicular to the surface.
  E) None of the above statements are correct.
Physics ¦ Walker ¦ 5th Edition
Buy Test-Bank


joewallace

  • Sr. Member
  • ****
  • Posts: 337
Reply #1 on: Jul 29, 2018
Answer to Question 1

B

Answer to Question 2

A, B, D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.

Did you know?

According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

Did you know?

In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

The tone of the nurse-patient introduction sets the stage for the patient interview and patient care The tone of the nurse-patient introduction sets the stage for the patient interview and patient care
A certain car traveling at 34.0 mph skids to a stop in 29 meters from the point where the ... A certain car traveling at 34.0 mph skids to a stop in 29 meters from the point where the ...
A wave whose wavelength is 0.500 m is traveling down a 500-m long wire whose total mass is 25 ... A wave whose wavelength is 0.500 m is traveling down a 500-m long wire whose total mass is 25 ...
A wave whose wavelength is 0.500 m is traveling down a 500-m long wire whose total mass is 25 ... A wave whose wavelength is 0.500 m is traveling down a 500-m long wire whose total mass is 25 ...
Light in air is initially traveling parallel to the face AC of an equilateral triangular prism, ... Light in air is initially traveling parallel to the face AC of an equilateral triangular prism, ...
A thin laser beam traveling in air strikes the surface of a glass plate at 41.2° with the ... A thin laser beam traveling in air strikes the surface of a glass plate at 41.2° with the ...
Video: Fertilization and Development

For a complete list of videos, visit our video library