By Raymond A. Serway
Whereas physics can look not easy, its actual caliber is the sheer simplicity of basic actual theories--theories and ideas which could enhance your view of the area round you. collage PHYSICS, 9th variation, presents a transparent procedure for connecting these theories to a constant problem-solving process, conscientiously reinforcing this system through the textual content and connecting it to real-world examples. for college kids making plans to take the MCAT examination, the textual content comprises particular attempt prep and evaluation instruments that will help you organize.
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Extra info for College Physics, 9th Edition
The proton is nature’s most common carrier of positive charge, equal in magnitude but opposite in sign to the charge on the electron. The number of protons in a nucleus determines what the element is. For instance, a nucleus containing only one proton is the nucleus of an atom of hydrogen, regardless of how many neutrons may be present. Extra neutrons correspond to different isotopes of hydrogen—deuterium and tritium— which react chemically in exactly the same way as hydrogen, but are more massive.
The standard reference line is usually selected to be the positive x-axis of a Cartesian coordinate system. The angle u is considered positive when measured counterclockwise from the reference line and negative when measured clockwise.
007 5 are not considered significant figures. 007 5 has two. When zeros are placed after other digits in a whole number, there is a possibility of misinterpretation. For example, suppose the mass of an object is given as 1 500 g. This value is ambiguous, because we don’t know whether the last two zeros are being used to locate the decimal point or whether they represent significant figures in the measurement. Using scientific notation to indicate the number of significant figures removes this ambiguity.