Chapter 1: Q11PE (page 11)
What is the relationship between the accuracy and uncertainty of measurement?
If uncertainty is high in measurements, the accuracy in value is low.
If the measurement is very accurate then the uncertainty is low.
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If two different theories describe experimental observations equally well, can one be said to be more valid than the other (assuming both use accepted rules of logic)?
A person measures his or her heart rate by counting the number of beats in 30 s. If are counted in, what is the heart rate and its uncertainty in beats per minute?
Identify the type of energy transferred to your body in each of the following as either internal energy, heat transfer, or doing work: (a) basking in sunlight; (b) eating food; (c) riding an elevator to a higher floor
The sides of a small rectangular box are measured to be \({\bf{1}}.{\bf{80}} \pm {\bf{0}}.{\bf{01}}{\rm{ }}{\bf{cm}}\), \({\bf{2}}.{\bf{05}} \pm {\bf{0}}.{\bf{02}}{\rm{ }}{\bf{cm}}\), and \({\bf{3}}.{\bf{1}} \pm {\bf{0}}.{\bf{1}}{\rm{ }}{\bf{cm}}\) long. Calculate its volume and uncertainty in cubic centimeters
a) What energy photons can pump chromium atoms in a ruby laser from the ground state to its second and third excited states?
(b) What are the wavelengths of these photons? Verify that they are in the visible part of the spectrum.
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