« previous next »

Author Question: Suppose that Hubble's constant were 20 kilometers per second per million light-years. How fast would ... (Read 161 times)

Themember4

  • Hero Member
  • *****
  • Posts: 538
on: Jul 27, 2018
Suppose that Hubble's constant were 20 kilometers per second per million light-years. How fast would we expect a galaxy 100 million light-years away to be moving? (Assume the motion is due only to Hubble's law.)
 
  A) away from us at 20,000 km/s B) away from us at 200 km/s
  C) away from us at 2,000 km/s D) toward us at 2,000 km/s

Question 2

Stellar masses are determined by observing ________ stars.
 
  Fill in the blank(s) with correct word


Galvarado142

  • Sr. Member
  • ****
  • Posts: 348
Reply #1 on: Jul 27, 2018
Answer to Question 1

C

Answer to Question 2

binary


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.

Did you know?

Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

Did you know?

Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.

Did you know?

More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.

The Dingo was the first placental mammal introduced to Australia, around 4000 years ago The Dingo was the first placental mammal introduced to Australia, around 4000 years ago
Earth’s history spans 4.5 billion years. Geologists and paleontologists have pieced together the his Earth’s history spans 4.5 billion years. Geologists and paleontologists have pieced together the his
Light Waves in the Electromagnetic Spectrum Light Waves in the Electromagnetic Spectrum
VESPR Chart. My favorite for many years VESPR Chart. My favorite for many years
Your nose runs like a leaky faucet and turns beet red from constant wiping Your nose runs like a leaky faucet and turns beet red from constant wiping
The apples of today are larger and sweeter than their ancestors, thanks to hundreds of years The apples of today are larger and sweeter than their ancestors, thanks to hundreds of years
Video: Tuberculosis Testing

For a complete list of videos, visit our video library