The diameter of our solar system (depending on how you define "solar system") is about 8,980,000,000,000 kilometers. the distance from our solar system to the nearest star, proxima centauri, is about 39,900,000,000,000,000 kilometers. a light-year is the distance light travels in one year, and it is equal to about 9,460,000,000,000 kilometers.
a) write each of these numbers in scientific notation. explain how you got your answers, and explain why you know that your method works.
b) you’d like to both know the end-to-end distance within the solar system and the distance to proxima centauri in light-years. using your scientific notation numbers, convert these distances. what is the ratio of the solar system’s length to the proxima centauri distance?
c) light travels at 300,000 kilometers per second. write this rate in scientific notation. when proxima centauri sends out light at that speed, how long does it take to reach our solar system? can you convert to minutes, hours, days, or years? does your answer in years correspond to the distance in light-years from our solar system to proxima centauri? why or why not?
Answers: 3
Physics, 21.06.2019 23:30, idjfjcjs584
Edward tolman explained the results of his study by theorizing that the rats were learning about the maze during every trial but they a. were agitated because other groups were getting reinforcement b. could not remember how to demonstrate it without reinforcement c. were not motivated to demonstrate it without reinforcement d. seemed to be too lazy to actually work without reinforcement
Answers: 3
Physics, 22.06.2019 04:30, AShevel6767
In a system, when potential energy decreases, then entropy also decreases. true false
Answers: 3
Physics, 22.06.2019 21:50, nathaniel12
Which of the following is part of the explanation or description of electromagnetic waves? (select all that apply) a. electrically charged molecules in a medium transfer their energy to nearby electrically charged molecules. b. a changing electric field causes a changing magnetic field. c. magnetic molecules in a medium transfer their energy to nearby magnetic molecules. d. a changing magnetic field causes a changing electric field.
Answers: 3
The diameter of our solar system (depending on how you define "solar system") is about 8,980,000,000...
Mathematics, 21.11.2019 18:31