Method of solution first state the problem h 275 10 9

Info iconThis preview shows page 1. Sign up to view the full content.

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

Unformatted text preview: m = 2.75 × 10 5 µg _______________________________________________________________________________ EXAMPLE 1.12 The Factor-Label Method The Voyager 2 mission to the outer planets of the solar system transmitted spectacular photographs of Neptune to Earth by radio signals. Radio waves, like light waves, travel at a speed of 3.00 × 10 8 m/s. If Neptune was 2.75 billion miles from Earth during these transmissions, how many hours were required for radio signals to travel from Neptune to Earth? •Method of Solution First state the problem. ? h = 2.75 × 10 9 mi The speed of light can be written as a conversion factor because 1 s of time is equivalent to 3.00 × 10 8 m of distance. 3.0 × 1 0 8 m 1s 1s 3.00 × 1 0 8 m This will convert units of distance into units of time in seconds, but first the distance must be expressed in meters rather than miles. To convert from the U.S. system to the SI, we can use 1.61 km = 1.0 mile. In general, our plan will be: distance → or t ime miles → k m → m → s → min → h Notice that the time in seconds must be converted...
View Full Document

Ask a homework question - tutors are online