« previous next »

Author Question: A space probe has an 24.7-m length when measured at rest. What length does an observer at rest ... (Read 77 times)

drink

  • Hero Member
  • *****
  • Posts: 554
on: Jul 28, 2018
A space probe has an 24.7-m length when measured at rest. What length does an observer at rest measure when the probe is going by at a speed of 0.860c?
 a. 25.2 m
  c. 9.19 m
  b. 6.43 m
  d. 12.6 m

Question 2

According to the special theory of relativity, which of the following happens to the length of an object, measured in the dimension parallel to the motion of its inertial frame of reference, as the velocity of this frame increases with respect to a stationary observer?
 a. the length remains constant
  b. the length vanishes to zero when velocity equals half the speed of light
  c. the length increases
  d. the length decreases


ong527

  • Sr. Member
  • ****
  • Posts: 285
Reply #1 on: Jul 28, 2018
Answer to Question 1

D

Answer to Question 2

D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Less than one of every three adults with high LDL cholesterol has the condition under control. Only 48.1% with the condition are being treated for it.

Did you know?

Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.

Did you know?

Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

Did you know?

According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.

Did you know?

Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.

The nucleus of Halley's Comet, taken by the Giotto probe in 1986 The nucleus of Halley's Comet, taken by the Giotto probe in 1986
Space Junk Space Junk
Space Space
Gently squeeze along the length of each toe. Move proximal to distal. Squeeze top and bottom first, ... Gently squeeze along the length of each toe. Move proximal to distal. Squeeze top and bottom first, ...
Pinch the sternocleidomastoid (SCM) muscle at points along its length. Turn head to side to expose ... Pinch the sternocleidomastoid (SCM) muscle at points along its length. Turn head to side to expose ...
A space probe approaches a planet, taking measurements as it goes. If it detects a potential ... A space probe approaches a planet, taking measurements as it goes. If it detects a potential ...
Video: Structures that affect circulation - heart and systolic/diastolic BP

For a complete list of videos, visit our video library