Author Question: The Harvard College Observatory Computers from c. 1880 into the early 20th century were: A) the ... (Read 29 times)

abc

  • Hero Member
  • *****
  • Posts: 543
The Harvard College Observatory Computers from c. 1880 into the early 20th century were:
 
  A) the first digital computers.
  B) not much different than cash registers.
  C) functionally similar to the modern 4- function calculator.
  D) a group of women who made important contributions to astronomy.
  E) mechanically operated adding machines.

Question 2

Typical stellar spectra appear as:
 
  A) a series of bright, colored lines.
  B) an unbroken rainbow of colors.
  C) a rainbow, but with some dark lines mixed in.
  D) a rainbow with some bright lines on top of the continuum.
  E) a very redshifted rainbow due to the expansion of the universe.



rachel

  • Sr. Member
  • ****
  • Posts: 323
Answer to Question 1

D

Answer to Question 2

C



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.

Did you know?

When taking monoamine oxidase inhibitors, people should avoid a variety of foods, which include alcoholic beverages, bean curd, broad (fava) bean pods, cheese, fish, ginseng, protein extracts, meat, sauerkraut, shrimp paste, soups, and yeast.

Did you know?

Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.

Did you know?

During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

Did you know?

On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.

For a complete list of videos, visit our video library