definition magnitude physics
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Answers:Strictly speaking, magnitude is the "amount" associated with a vector; the vector stripped of any information about its direction. Graphically, a vector is represented by an arrow, defining the direction, and the length of the arrow defines the vector's magnitude. I would recommend you view the information on vectors cited below and then reexamine your problem. I believe you will then be able to solve the question with little difficulty.
Answers:Order of magnitude is merely a means of comparing numbers with large scale differences. 3.2 will be considered to have order of magnitude 0. 32 has order of magnitude 1. 3.2 * 10^5 has order of magnitude 5. There are differences in jargon between engineers and mathematicians. For example, 456 has order of magnitude 2. An engineer might say that 456 is in the order of 10^2.
Answers:80 km/h is closer to 100 km/hr than any of the other choices. so answer = C. the wikipedia entry provides a mathematical formulation for this quantity, but i can tell you that in practice in physics - it is typically used more often not as the exponent of the truncation of the log of the number (as the wiki definition implies), but as the exponent of the nearest integer of the log of the number. i.e. the exp(rounded off value of logarithm of the number). i.e. log10(80) = 1.9, which rounds to 2, and 10^(2) = 100 you might want to check your textbook or w/ the teacher to see which definition is preferred. the definition i described is the one used by practicing physicists. if this is a math class then you might need to use the other definition. cheers
Answers:Order of magnitude is the largest power of 10 in the number. When the number is written in scientific notation, the order of magnitude is the exponent. So write all the numbers below in scientific notation. 1. 3.21x10^9 2. 4.99x10^5 3. 11,000 = 1.1000 * 10^4 4. 1.25x10^-4 1. 9 2. 5 3. 4 4. -4