The mass of the body is found by simply weighing a person on a scale. The volume of the body is most easily and accurately determined by completely immersing a person in water and calculating the volume of water from the weight of water that is displaced (via underwater weighing).
Mailman Salary Statistics as of 2015. Average annual salary for a Mailman is $36600 based on statistics in the U.S. as of 2015. The highest salary recorded was $76765. The lowest salary reported was $15604. These figures will vary on a state to state basis as these are averages across all 50 states.
A mailman, or mail carrier, sorts and delivers mail to a particular route. Mail carrier jobs are available through the United States Postal Service. Mail carriers typically work full-time, 40-hour-per-week jobs and perform active duties such as driving, lifting and walking.rade 2 Letter Carrier Salaries. A letter carrier can be promoted from grade 1 to grade 2 after a year of satisfactory service. A grade 2 letter carrier starts at a salary of $45,232, or $21.74 hourly.