This topic contains a solution. Click here to go to the answer

Author Question: Radio communication between distant places on Earth is possible because the A) ionosphere ... (Read 174 times)

kshipps

  • Hero Member
  • *****
  • Posts: 571
Radio communication between distant places on Earth is possible because the
 
  A) ionosphere reflects radio signals.
  B) ionosphere transmits radio signals.
  C) stratosphere reflects radio signals.
  D) exosphere reflects radio signals.

Question 2

Which of statement below about black holes is not true?
 
  A) Although we are not 100 certain that black holes exist, we have strong observational evidence in favor of their existence.
  B) If you watch someone else fall into a black hole, you will never see him (or her) cross the event horizon; you'll only see him fade from view as the light he emits or reflects becomes more and more redshifted.
  C) A spaceship passing near a 10-solar-mass black hole is much more likely to be destroyed than a spaceship passing at the same distance from the center of a 10-solar-mass main-sequence star.
  D) If you fell into a black hole, you would experience time to be running normally as you plunged rapidly across the event horizon.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

kswal303

  • Sr. Member
  • ****
  • Posts: 316
Answer to Question 1

A

Answer to Question 2

C




kshipps

  • Member
  • Posts: 571
Reply 2 on: Jul 27, 2018
Wow, this really help


scottmt

  • Member
  • Posts: 322
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

 

Did you know?

Automated pill dispensing systems have alarms to alert patients when the correct dosing time has arrived. Most systems work with many varieties of medications, so patients who are taking a variety of drugs can still be in control of their dose regimen.

Did you know?

People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.

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?

The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.

Did you know?

The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

For a complete list of videos, visit our video library