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 91 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
:D TYSM

strudel15

  • Member
  • Posts: 324
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Colchicine is a highly poisonous alkaloid originally extracted from a type of saffron plant that is used mainly to treat gout.

Did you know?

Cyanide works by making the human body unable to use oxygen.

Did you know?

Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

Did you know?

In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.

Did you know?

It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

The Black Death spread over much of Europe in a three-year period in the middle of the fourteenth ce The Black Death spread over much of Europe in a three-year period in the middle of the fourteenth ce
Ramose's Brother May And His Wife Werener Ramose's Brother May And His Wife Werener
The year 2010 was the hottest since 1880 The year 2010 was the hottest since 1880
A promissory note has a face value of $6000 and it has a date of issue of June 1 this year. The ... A promissory note has a face value of $6000 and it has a date of issue of June 1 this year. The ...
No payments were made on a $2,598 loan during its three-year term. What was the annually ... No payments were made on a $2,598 loan during its three-year term. What was the annually ...
Video: Pores and Ion Channels

For a complete list of videos, visit our video library