True. The sensation of a frequency is commonly referred to as the pitch of a sound. A high pitch sound corresponds to a high frequency sound wave and a low pitch sound corresponds to a low frequency sound wave. ... Such sound waves form the basis of intervals in music.
Yes, the data from mass spectrometry has helped modern scientists to make modifications to Dalton's model.
Dalton's model consisted of a single atom and that basically the atom is the smallest object. At the time, no discovered what are inside of atoms.
Atoms are made up of small particles, protons, neutrons and electrons. A mass spectrometer is an instrument that is able to see what is inside an atom. With this item, scientists have proved that atoms are not the smallest in the world cause the objects in them are smaller.
They are used as radio waves, infrared radiation, visible light.
Expectations not exceptions
The African Americans in the roaring 20s were treated unfairly and badly. Slavery was a problem in the 20s and African Americans were kicked out of their homes and lost jobs. Many African Americans worked on plantations and were living in harsh conditions. Immigrants also worked on plantations and were refused many jobs due to their background. Many immigrants had a hard time finding jobs and being able to support their family. The stock market crash made it harder for immigrants and African Americans to live. More people were kicked out of their homes due to the stock market crash and many people lost their lives because they were poor and did not have the funds to support their families.
