Answer:
a longer wavelength means a lower frequency, and a shorter wavelength means a higher frequency!
Answer:
A
Explanation:
13th abolishes slavery
14th grants citizenship to all born or naturalized in the US; including former slaves
15th prohibits disenfranchising voters based on race, color, or previous condition of servitude
so the answer is A
. granted rights to African Americans
Answer:
The answer is "measure the parallax and use it in calculations".
Explanation:
In this question, the above choice is correct because, in the summer and winter, light is observed from both parts of a planet. An astronomer can once, again and 6 weeks later calculate the position of a star and then compute the perceived shift of location. It measures which utilizes parallax and its best method for calculating the approximate distance between the star, as well as the planet.
