Epidemiology Quiz X omar. edu/anthro/medical/quizzes Mediqui3.htm
** CORRECT --Epidemiology is the field of medical
science that is focused on learning about how, where,
and why diseases develop and how best to control their
spread
2
.
Diseases thar are avays present in a community, usually at a low,
more or less constant, frequency are classified as having an
pamer.
a) epidemic
Ob) endemic
c) pandemic
Which of the following starements is a

Heat is added to a piston-cylinder device filled with 2 kg of air to raise its temperature 400 c from an initial temperature of t1 27 cand pressure of pi 1 mpa. the process is isobaric process. find a)-the final pressure p2 b)-the heat transfer to the air.

Determine whether or not it is possible to compress air adiabatically from k to 140 kpa and 400 k. what is the entropy change during this process?

For the closed feedwater heater below, feedwater enters state 3 at a pressure of 2000 psia and temperature of 420 °f at a rate of ix10 ibhr. the feedwat extracted steam enters state 1 at a pressure of 1000 psia and enthalpy of 1500 btu/lbm. the extracted er leaves at an enthalpy of 528.7 btu/lbm steam leaves as a saturated liquid. (16) a) determine the mass flow rate of the extraction steam used to heat the feedwater (10) b) determine the terminal temperature difference of the closed feedwater heater