4. An 82 kg hiker climbs Mt. Humphrey near Flagstaff. During a two hour period, the hiker's

vertical elevation increases by 540 meters,

a. Calculate the climber's delta Eg

,

Explanation:

The change in energy is given by the change in gravitational potential energy:

The average rate of change in terms of time is approximately this:

chemical digestion occurs in the stomach were hcl and pepsin forms chyme, the mouth in which salivary amylase breaks down starch to form bolus, and the small intestine specifically the duodenum.