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Chapter 1: Q8. (page 17)
represents the dimensions for which of the following?
(a) cm2
(b) square feet
(c) m2
(d) All the above
The correct option is (d).
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An angstrom (symbol) is a unit of length, defined as, which is on the order of the diameter of an atom.
(a) How many nanometres are there in 1.0 angstrom?
(b) How many femtometers or fermis (the common unit of length in nuclear physics) are there in 1.0 angstrom?
(c) How many angstroms are there in 1.0 m?
(d) How many angstroms are there in 1.0 light-year (See problem 19)?
Many sailboats are docked at a marina 4.4 km away on the opposite side of a lake. You stare at one of the sailboats because, when you are lying flat at the water’s edge, you can see its deck but none of the side of the sailboat. You then go to the sailboat on the other side of the lake and measure that the deck is 1.5 m above the level of the water. Using Fig. 1-16, where h = 1.5 m, estimate the radius R of the earth.
What is the percent uncertainty in the measurement ?
The sun, on average, is 93 million miles from the earth. How many meters is this? Express (a) using powers of 10, and (b) using a metric prefix (km).
A typical atom has a diameter of about.
(a) What is this in inches?
(b) Approximately how many atoms are along a 1.0 cm line, assuming they just touch?
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