Chemistry, 09.03.2021 01:00 miguel3maroghi
Astronomers have developed several ways to measure the vast distances between Earth and the stars and galaxies. What do you know about two of these
techniques?
An astronomical unit (A. U.) is the average distance between the Earth and the Sun.
Our galaxy, the Milky Way, is about 150 light-years across
An astronomical unit is about 93 million kilometers.
Astronomers measure distances to objects which are outside our solar system in light-years.
The A. U. is used to measure distance within our solar system.
A light-year (ly) is the distance that light can travel in one year in a vacuum.
Answers: 2
Chemistry, 21.06.2019 17:10
The concept of empiricism states that all rationally accepted knowledge is determined from experience. francis bacon was one of the first scientists to promote this theory. what was itโs impact on society?
Answers: 1
Chemistry, 22.06.2019 00:30
Maria wants to determine which type of disinfectant kills the most bacteria. which of the following is the best way for maria to determine this? a. ask ten different companies that make disinfectants which type is best. b. put the same amount and species of bacteria on ten identical plates, and add ten different kinds of disinfectant to each plate. c. interview ten different people to determine which type of disinfectant they prefer. d. put the same amount and species of bacteria on ten identical plates, and add a different disinfectant to each plate.
Answers: 1
Chemistry, 22.06.2019 06:10
56.16 gregor mendel was the first scientist to use statistics to analyze scientific data. before mendel's experiments, scientists believed that organisms acquired traits from their environment and passed them on to their offspring. after mendel's discoveries were accepted, scientists realized that traits passed to offspring were the result of genes being passed from parents to offspring. this is an example of pls
Answers: 1
Astronomers have developed several ways to measure the vast distances between Earth and the stars an...
Biology, 26.05.2020 21:04
Mathematics, 26.05.2020 21:04
Mathematics, 26.05.2020 21:04
Mathematics, 26.05.2020 21:04
Arts, 26.05.2020 21:04
Geography, 26.05.2020 21:04
History, 26.05.2020 21:04
Mathematics, 26.05.2020 21:04
English, 26.05.2020 21:04
Mathematics, 26.05.2020 21:04
Mathematics, 26.05.2020 21:04