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

Author Question: What do we mean by time dilation in relativity? A) It is the idea that time seems to run slower ... (Read 86 times)

theo

  • Hero Member
  • *****
  • Posts: 698
What do we mean by time dilation in relativity?
 
  A) It is the idea that time seems to run slower in reference frames moving relative to you, but time really is the same for everyone.
  B) It is the idea that relativity makes time dilate, or expand, for people who study it.
  C) It is a hallucinogenic effect experienced by people who take too much of something.
  D) It is the idea that time really runs slower in reference frames moving relative to you.

Question 2

The measured value of the speed of light is about 300,000 km/s. Suppose a futuristic space train is traveling at 200,000 km/s with its headlights on. If you could measure the speed of the light from the headlights, you would find it to be
 
  A) 200,000 km/s.
  B) 100,000 km/s.
  C) 300,000 km/s.
  D) 500,000 km/s.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

succesfull

  • Sr. Member
  • ****
  • Posts: 339
Answer to Question 1

D

Answer to Question 2

C





 

Did you know?

Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.

Did you know?

Alcohol acts as a diuretic. Eight ounces of water is needed to metabolize just 1 ounce of alcohol.

Did you know?

Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

Did you know?

Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.

Did you know?

About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.

For a complete list of videos, visit our video library