{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

discussion_problems1

# discussion_problems1 - DISCUSSION PROBLEM 1.1 answers...

This preview shows pages 1–4. Sign up to view the full content.

1 Origin of standardized units: LENGTH A “fallback” unit of length ... a bar of platinum- iridium with two scratches, exactly 1 meter apart. DISCUSSION PROBLEM 1.1 : Can you think of reasons why this may not be such a good standard today? DISCUSSION PROBLEM 1.1 : ... answers ... Variation of length with temperature? • Do you measure to the left-hand edge of the scratch, or the middle or the right-hand edge?

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
2 DISCUSSION PROBLEM 1.2 : Can you think of any physical quantities that do not have dimension? DISCUSSION PROBLEM 1.2 : ... answers ... Ordinary numbers. π = = circumference diameter [ ] [ ] L L dimensionless. θ = = arc length radius [ ] [ ] L L dimensionless. Note that although θ has no dimension, it does have a unit (radians, degrees)! Specific gravity = weight of an object weight of an equal amount of water dimensionless.
3 DISCUSSION PROBLEM 1.3 : Estimate how many quarts of milk (all kinds) are consumed each day at breakfast in the U.S. DISCUSSION PROBLEM 1.3 : ... answer ... Population 300,000,000

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}