COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 1, Problem 3QAP
To determine
The properties possessed by an object, system, or process which makes it useful standard of measurement of a physical quantity.
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Students have asked these similar questions
Question No. 1
A physical quantity is measured and its value is found to be equal to nu, where n is the numerical value and u is the unit. Which of the following
relations is true?
O nxu?
.2
O nxu
O nx vũ
(a) What does it mean when we say that the formulas used in physics are consistent with
SI units?
(b) For two quantities with the same physical dimensions can you add (or subtract),
multiply (or divide) or do both with these two quantities? For two quantities with
different physical dimensions can you add (or subtract), multiply (or divide) or do
both with these two quantities?
(c) Under what condition(s) can we treat the acceleration due to gravity as a constant?
Explain what we mean that the acceleration due to gravity is "constant" under this
(or these) condition(s).
a) Estimate the number of breaths taken .during an average human lifetime Hint: Let we start by guessing that the typical human lifetime is about 70 years. Think about the average number of breaths that a person takes in 1 min. This number varies depending on whether the person is exercising, sleeping, angry, serene, and so forth. To the nearest order of magnitude, we shall choose 10 breaths per minute as our estimate. (This estimate is certainly closer to the true average value than an estimate of 1 breath per minute or 100 breaths per minute.) b) What if the average lifetime were estimated as 80 years instead of 70? ?Would that change our final estimate
Chapter 1 Solutions
COLLEGE PHYSICS
Ch. 1 - Prob. 1QAPCh. 1 - Prob. 2QAPCh. 1 - Prob. 3QAPCh. 1 - Prob. 4QAPCh. 1 - Prob. 5QAPCh. 1 - Prob. 6QAPCh. 1 - Prob. 7QAPCh. 1 - Prob. 8QAPCh. 1 - Prob. 9QAPCh. 1 - Prob. 10QAP
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