A delivery man starts at the post office, drives 35 km north, then 25 km west, then 65 km northeast, and finally 40 km north to stop for lunch. Use a graphical method to find his net displacement vector.

What is the scientific definition of energy that relates to work

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?

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