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

Author Question: A standard candle is ________. A) a light source of known luminosity B) a 7-cm-long wax candle ... (Read 81 times)

Pineapplelove6

  • Hero Member
  • *****
  • Posts: 560
on: Jul 27, 2018
A standard candle is ________.
 
  A) a light source of known luminosity B) a 7-cm-long wax candle
  C) another name for a main-sequence star D) another name for a barred-spiral galaxy

Question 2

The rotation curve for our Galaxy shows stars beyond the Sun moving more slowly than expected.
 
  Indicate whether the statement is true or false


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

josephsuarez

  • Sr. Member
  • ****
  • Posts: 323
Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

FALSE


Pineapplelove6

  • Member
  • Posts: 560
Reply 2 on: Jul 27, 2018
Thanks for the timely response, appreciate it

debra928

  • Member
  • Posts: 342
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

Did you know?

Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.

Did you know?

Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.

Did you know?

During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

Did you know?

In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.

The proportion of men and women with elevated blood pressure or taking hypertension medication incre The proportion of men and women with elevated blood pressure or taking hypertension medication incre
The inhibitory response of rods to light. When light bleaches rhodopsin molecules, the rods’ ... The inhibitory response of rods to light. When light bleaches rhodopsin molecules, the rods’ ...
a) Standard PCR machine used for genotyping and (b) agarose gel to detect DNA fragments. a) Standard PCR machine used for genotyping and (b) agarose gel to detect DNA fragments.
Dash Warning Lights: Coolant Temperature Light Dash Warning Lights: Coolant Temperature Light
The Standard Rain Gauge The Standard Rain Gauge
Each chromosome consists of a single, long molecule of DNA within which are the sequences of individ Each chromosome consists of a single, long molecule of DNA within which are the sequences of individ
Video: Pneumonia Animation

For a complete list of videos, visit our video library