The first one? Sorry I’m im wrong
frequency's unit is Hz which mean cycles per second
given frequency * wavelength = speed of wave
speed of light = 3x10^8 m/s
wavelength = 680nm = 680x10^-9 m
frequency * 680x10^-9 m = 3x10^8 m/s
frequency = 3x10^8 / 680x10^-9
= 4.41x10^14 Hz
= 441x10^12 Hz
= 441 THz
which is the frequency for red light
Answer:
The Gilded Age was a period in American history In which a chunk of its citizens were made wealthy . This gave rise to the people called the robber barons who became wealthy as a result of their monopoly on some sectors of the economy and became an integral part of society. Some examples of robber barons include John D. Rockefeller, Andrew Carnegie, and JP Morgan.
They were known to live a very lavish lifestyle due to their fortunes.
2
hope this helps, good luck! :)
Answer: The numbers are 3/2. and 9/10
Explanation:
3 divided by 2 equals 1.5 and 9 divided by 10 equals 0.9
1.5 minus 0.9 = 0.6
