A hiker walks 60.0 m to the right in 17.8 seconds, then turned around and walked 35.0 m to the left in the 12.8 second. Calculate the magnitude of the hikers' average velocity.

Suppose that recording station n is located 200 km north of the epicenter of an earthquake, and recording station s is located 100 km south of the epicenter of the same earthquake. which of the following statements would be true?

What is the scientific definition of energy that relates to work

The freezing and boiling point of a substance changes as the air pressure around it changes. for example, at a lower air pressure (higher altitude) it is easier for water molecules to escape from liquid into the air. in a high altitude city such as denver, colorado compared to a sea-level city such as houston, texas, water