« 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 72 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?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.

Did you know?

Russia has the highest death rate from cardiovascular disease followed by the Ukraine, Romania, Hungary, and Poland.

One proposed timeline of the origin of space, from physical cosmology. One proposed timeline of the origin of space, from physical cosmology.
Examples of characteristics measured by palpation Examples of characteristics measured by palpation
Noon-Day Rest in Marble Canyon, after an original sketch by Thomas Moran, from J. W. Powell, ... Noon-Day Rest in Marble Canyon, after an original sketch by Thomas Moran, from J. W. Powell, ...
Seriation features operations of comparing the length of each stick to the other sticks and putting ... Seriation features operations of comparing the length of each stick to the other sticks and putting ...
A typical massage room has adequate space for equipment and pleasant decorations. A typical massage room has adequate space for equipment and pleasant decorations.
Gently squeeze along the length of the arm with both hands, moving down the arm from shoulder to ... Gently squeeze along the length of the arm with both hands, moving down the arm from shoulder to ...
Video: Glycolysis - Introduction to ATP and the burning of sugar

For a complete list of videos, visit our video library