This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A radar pulse returns 2.0 10-4 seconds after it is sent out, having been reflected by an object. ... (Read 65 times)

jon_i

  • Hero Member
  • *****
  • Posts: 549
on: Jul 28, 2018
A radar pulse returns 2.0  10-4 seconds after it is sent out, having been reflected by an object. What is the distance between the radar antenna and the object? (c = 3.00  108 m/s)
 a. 3.0  104 m
  c. 9.0  104 m
  b. 4.5  104 m
  d. 6.0  104 m

Question 2

A buzzer with frequency f0 is thrown straight upwards. On the buzzer's trip down, what is the frequency behavior heard by an observer below?
 a. The frequency heard is still f0.
  b. The frequency is a constant one greater than f0.
  c. The frequency is an increasing one greater than f0.
  d. The frequency is a decreasing on less than f0.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

kusterl

  • Sr. Member
  • ****
  • Posts: 315
Reply #1 on: Jul 28, 2018
Answer to Question 1

A

Answer to Question 2

C


jon_i

  • Hero Member
  • *****
  • Posts: 549
Reply #2 on: Jul 28, 2018
Thank you!


kusterl

  • Sr. Member
  • ****
  • Posts: 315
Reply #3 on: Jul 28, 2018
Always glad to help...


« previous next »
 

Did you know?

Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

Did you know?

Blood is approximately twice as thick as water because of the cells and other components found in it.

Did you know?

Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

Did you know?

During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

Did you know?

Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

A simulated-color map of the surface of Venus as measured by synthetic aperture radar on the Magella A simulated-color map of the surface of Venus as measured by synthetic aperture radar on the Magella
Primary pulse points of the body. Primary pulse points of the body.
Nine pulse sites on the human body. Nine pulse sites on the human body.
The injector on-time is called the pulse width. The injector on-time is called the pulse width.
These photos show a rat burying a test object from which it has just received a single mild shock. These photos show a rat burying a test object from which it has just received a single mild shock.
Short-wavelength flux is reflected by Earth Short-wavelength flux is reflected by Earth
Video: Anaphylaxis Animation

For a complete list of videos, visit our video library