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 53 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
Great answer, keep it coming :)

vickyvicksss

  • Member
  • Posts: 351
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.

Did you know?

In women, pharmacodynamic differences include increased sensitivity to (and increased effectiveness of) beta-blockers, opioids, selective serotonin reuptake inhibitors, and typical antipsychotics.

Did you know?

Women are 50% to 75% more likely than men to experience an adverse drug reaction.

Did you know?

The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

Did you know?

Fatal fungal infections may be able to resist newer antifungal drugs. Globally, fungal infections are often fatal due to the lack of access to multiple antifungals, which may be required to be utilized in combination. Single antifungals may not be enough to stop a fungal infection from causing the death of a patient.

Reindeer antlers grow again each year under a layer of fur called velvet. This reindeer is losing th Reindeer antlers grow again each year under a layer of fur called velvet. This reindeer is losing th
In this painting evangelist George Whitefield appears to be cross-eyed. This is no fault of John Wol In this painting evangelist George Whitefield appears to be cross-eyed. This is no fault of John Wol
Where is this woman starring? Where is this woman starring?
For the 2-year-old, encounters with peers provide valuable practice in communication and social ... For the 2-year-old, encounters with peers provide valuable practice in communication and social ...
Observed Mother–Child Arguments at Five Time Points Over an Eight-Year Period Observed Mother–Child Arguments at Five Time Points Over an Eight-Year Period
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
Video: Flexor reflex & Crossed extensor reflex

For a complete list of videos, visit our video library