The lowest and highest natural temperatures ever recorded on earth are −129°F in Antarctica and 134°F in Death Valley. What are these temperatures in °C and in K?

A watch manufacturer claims that its watches gain or lose no more than 9 seconds in a year. How accurate are these watches, expressed as a percentage?

Write the following as full (decimal) numbers without prefixes on the units:

(e) 22.5 nm

Express the following using the prefixes of Table 1–4: 18 x 10² bucks and

The age of the universe is thought to be about 14 billion years. Assuming two significant figures, write this in powers of 10 in :

(a) years

The Sun, on average, is 93 million miles from Earth. How many meters is this? Express

(b) using a metric prefix (km).