This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A 30-year-old woman takes a trip on a rocket, leaving her 20-year-old brother behind. She travels at ... (Read 257 times)

Marty

  • Hero Member
  • *****
  • Posts: 553
on: Jul 28, 2018
A 30-year-old woman takes a trip on a rocket, leaving her 20-year-old brother behind. She travels at a speed of 0.8 c, and is gone 20 years, according to the younger brother. When she returns, how many years older/younger is she than her brother?
 a. 2 years younger
  b. 2 years older
  c. 3 years older
  d. 10 years older
  e. 8 years older

Question 2

A spaceship moving past the Earth with a speed of 0.800 c signals to the Earth with pulsed laser photons emitted at 10.0-second intervals according to the spaceship's clock. According to observers on Earth who see the flashes, the time interval they measure is
 a. 13.4 s
  b. 16.7 s
  c. 12.5 s
  d. 9.70 s
  e. 6.03 s


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

cam1229

  • Sr. Member
  • ****
  • Posts: 329
Reply #1 on: Jul 28, 2018
Answer to Question 1

B

Answer to Question 2

B


Marty

  • Member
  • Posts: 553
Reply 2 on: Jul 28, 2018
Excellent

Bigfoot1984

  • Member
  • Posts: 321
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).

Did you know?

About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.

Did you know?

More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

Did you know?

Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.

Did you know?

Oxytocin is recommended only for pregnancies that have a medical reason for inducing labor (such as eclampsia) and is not recommended for elective procedures or for making the birthing process more convenient.

Changes in boreal forest composition along a chronosequence in Quebec. Dates refer to the year of th Changes in boreal forest composition along a chronosequence in Quebec. Dates refer to the year of th
The carbon cycle. Numbers are storage as 1015 g or fluxes as 1015 g per year (data from Schlesinger The carbon cycle. Numbers are storage as 1015 g or fluxes as 1015 g per year (data from Schlesinger
Paul Colin, Figure of a Woman. Paul Colin, Figure of a Woman.
Estimated number of new HIV infections per year over time period in Canada Estimated number of new HIV infections per year over time period in Canada
Main mechanism of carbon dioxide transport and exchange. A lesser amount of CO2 travels to the lungs Main mechanism of carbon dioxide transport and exchange. A lesser amount of CO2 travels to the lungs
The Serial Numbers for Each Day of the Year The Serial Numbers for Each Day of the Year
Video: Structures that affect circulation - venous return

For a complete list of videos, visit our video library