« previous next »

Author Question: A radar pulse returns 3.0 10-4 s after it was sent out and reflected by an object. What is the ... (Read 67 times)

vicotolentino

  • Hero Member
  • *****
  • Posts: 552
on: Jul 28, 2018
A radar pulse returns 3.0  10-4 s after it was sent out and reflected by an object. What is the separation distance of the radar source and the object?

Question 2

How much energy is in a 63 kHz photon of AM-radiation?
 a. 1.0  1038 J
  b. 6.6  1030 J
  c. 4.2  1029 J
  d. 3.1  1030 J
  e. 13  1029 J


Pswine

  • Sr. Member
  • ****
  • Posts: 328
Reply #1 on: Jul 28, 2018
Answer to Question 1

4.5  104 m

Answer to Question 2

c


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

Did you know?

Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

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).

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Palpation of radial pulse Palpation of radial pulse
The primary pulse points of the body. The primary pulse points of the body.
Measuring Radial Pulse Measuring Radial Pulse
Femoral pulse. Femoral pulse.
A health care professional taking a radial pulse and common pulse points. A health care professional taking a radial pulse and common pulse points.
Pulse–chase labeling evidence of bidirectional DNA replication in mammalian chromosomes Pulse–chase labeling evidence of bidirectional DNA replication in mammalian chromosomes
Video: DNA close up Animation

For a complete list of videos, visit our video library