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

Author Question: During which of the following phases of life is a star's pressure and gravity out of equilibrium? ... (Read 36 times)

jrubin

  • Hero Member
  • *****
  • Posts: 552
on: Jul 27, 2018
During which of the following phases of life is a star's pressure and gravity out of equilibrium?
 
  A) main sequence
  B) helium core fusion
  C) white dwarf
  D) red giant
  E) A star is never out of equilibrium.

Question 2

How can astronomers measure the period of a planet's orbit?
 
  A) by measuring the time between peaks in the star's velocity curve
  B) by timing the cycle of small changes in a stars position on the sky
  C) by measuring the time between repeated transits
  D) all of the above


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

adf223

  • Sr. Member
  • ****
  • Posts: 304
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

D


jrubin

  • Hero Member
  • *****
  • Posts: 552
Reply #2 on: Jul 27, 2018
Thank you!


adf223

  • Sr. Member
  • ****
  • Posts: 304
Reply #3 on: Jul 27, 2018
Always glad to help...


« previous next »
 

Did you know?

Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

Did you know?

The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.

Did you know?

The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.

Did you know?

Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

Did you know?

In 1864, the first barbiturate (barbituric acid) was synthesized.

Life-cycle of the Sun; sizes are not drawn to scale. Life-cycle of the Sun; sizes are not drawn to scale.
stage I pressure ulcer stage I pressure ulcer
Warming effleurage to thigh muscles. Use reinforced palm over palm method to apply deeper pressure ... Warming effleurage to thigh muscles. Use reinforced palm over palm method to apply deeper pressure ...
Live is Life - Opus Live is Life - Opus
Healthy eating is a way of life Healthy eating is a way of life
Nils Hoffmann feat. Dustin Tebbutt - Next Life Nils Hoffmann feat. Dustin Tebbutt - Next Life
Video: Arthroscopy

For a complete list of videos, visit our video library